Smash free data every day
We’re giving away free data every day. Head over to smash your way to free data. Requires active $11 or above consumer plan to win.
Add-ons
Get extra data, minutes or a quick IOU to keep your Pay monthly or Prepay plan going. There’s Endless and Carryover data options while in NZ, with Roaming data Add-ons for while you’re away. Check out the Data Clock app to buy data in bite sized chunks.
Pay Monthly
300 min
To international landlines and selected mobiles- Over 20 destinations
- Valid for 1 month, auto renews
$10 International Chat Pack
Call mobiles and landlines in the following destinations
| China | Hong Kong | India |
| Singapore | South Korea | United Kingdom (except overseas territories) |
| USA/Canada (except overseas territories) |
Call landlines in the following destinations
| Belgium | France | Denmark |
| Germany | Ireland | Italy |
| Netherlands | Norway | Poland |
| Portugal | Spain | Sweden |
| Switzerland | Malaysia | Taiwan |
| Thailand |
- This Pack is valid for 1 month and auto renews monthly on your billing date. If you purchase additional International Chat Pack(s), the additional International Chat Pack(s) will not renew.
- If you want to unsubscribe from your International Chat Pack's auto renew, simply text STOP INT300 to 233, or do it online at Your 2degrees. You'll still get to use any remaining minutes until your Pack expires.
- Calls to premium rate numbers in the applicable destinations are excluded.
- Calls are rounded up to the nearest minute.
- This Pack is not available on Business Select Plans, $100 and $125.
- Check out the full Terms and Conditions.
$10 International Chat Pack
How do I get this pack?
Quick and easy instructions on how to get this pack:
- Login to Your 2degrees and go to Add Ons to get this pack.
- Get the 2degrees mobile app and add the pack there.
- Text Buy INT300 to 233.
How do I get this pack?
It's really easy to join 2degrees, first choose the plan that you'd like, then once you're all signed up, simply choose the Add-ons that you need in Your 2degrees.
500MB
NZ data- Valid for 1 month, auto renews
$10 Pay Monthly NZ Data Pack
- NZ Data Packs are valid for 1 month and auto renew on your billing date. If you purchase additional NZ Data Pack(s), the additional NZ Data Pack(s) will not renew.
- If you want to unsubscribe from your NZ Data Pack's auto renewal simply text STOP 500MB to 233, or do it online at Your 2degrees. You can continue to use any remaining data until your Pack expires.
- Check out the full Terms and Conditions.
$10 Pay Monthly NZ Data Pack
How do I get this pack?
Quick and easy instructions on how to get this pack:
- Login to Your 2degrees and go to Add Ons to get this pack.
- Get the 2degrees mobile app and add the pack there.
- Text Buy 500MB to 233.
How do I get this pack?
It's really easy to join 2degrees, first choose the plan that you'd like, then once you're all signed up, simply choose the Add-ons that you need in Your 2degrees.
1GB
NZ data- Valid for 1 month, auto renews
$20 Pay Monthly NZ Data Pack
- NZ Data Packs are valid for 1 month and auto renew on your billing date. If you purchase additional NZ Data Pack(s), the additional NZ Data Pack(s) will not renew.
- If you want to unsubscribe from your NZ Data Pack's auto renewal simply text STOP 1GB to 233, or do it online at Your 2degrees. You can continue to use any remaining data until your Pack expires.
- Please note that if you are a Member of a Pool Plan, you will need your Leader to purchase the Data Pack on your Pool’s behalf.
- Check out the full Terms and Conditions.
$20 Pay Monthly NZ Data Pack
How do I get this pack?
Quick and easy instructions on how to get this pack:
- Login to Your 2degrees and go to Add Ons to get this pack.
- Get the 2degrees mobile app and add the pack there.
- Text Buy 1GB to 233.
How do I get this pack?
It's really easy to join 2degrees, first choose the plan that you'd like, then once you're all signed up, simply choose the Add-ons that you need in Your 2degrees.
15GB
NZ data- Valid for 1 month, auto renews
$50 Pay Monthly NZ Data Pack
- NZ Data Packs are valid for 1 month and auto renew on your billing date. If you purchase additional NZ Data Pack(s), the additional NZ Data Pack(s) will not renew.
- If you want to unsubscribe from your NZ Data Pack's auto renewal simply text STOP 15GB to 233, or do it online at Your 2degrees. You can continue to use any remaining data until your Pack expires.
- Please note that if you are a Member of a Pool Plan, you will need your Leader to purchase the Data Pack on your Pool’s behalf.
- Check out the full Terms and Conditions.
$50 Pay Monthly NZ Data Pack
How do I get this pack?
Quick and easy instructions on how to get this pack:
- Login to Your 2degrees and go to Add Ons to get this pack.
- Get the 2degrees mobile app and add the pack there.
- Text Buy 15GB to 233.
How do I get this pack?
It's really easy to join 2degrees, first choose the plan that you'd like, then once you're all signed up, simply choose the Add-ons that you need in Your 2degrees.
12GB
NZ data- Valid for 6 months
$99 Pay Monthly NZ Data Pack
- NZ Data Packs are valid for 6 months and do not auto renew.
- Please note that if you are a Member of a Group Plan, you will need your Group Plan leader to buy the Data Pack for everyone else in the group.
- Check out the full Terms and Conditions.
$99 Pay Monthly NZ Data Pack
How do I get this pack?
Quick and easy instructions on how to get this pack:
- Login to Your 2degrees and go to Add Ons to get this pack.
- Get the 2degrees mobile app and add the pack there.
- Text Buy 12GB to 233.
How do I get this pack?
It's really easy to join 2degrees, first choose the plan that you'd like, then once you're all signed up, simply choose the Add-ons that you need in Your 2degrees.
4GB
Max speed Data- Valid till the end of your current bill cycle
4GB Max Speed Data Pack
- Max speed Data Add-on can be purchased at any time during your bill cycle
- Any unused data from this Add-on will not carry over
- This Add-on does not auto renew
- If you have any Max speed data remaining on your Pay Monthly plan when you purchase this Add-on, the additional 4GB will be added to your remaining Max speed Data
- Valid till the end of your current bill cycle
- This add on is for Endless plans only, if you're unsure which plan you're on, you can check your bill or on the 2degrees mobile app.
- Check out the full Terms and Conditions.
4GB Max Speed Data Pack
How do I get this pack?
Quick and easy instructions on how to get this pack:
- Login to Your 2degrees and go to Add Ons to get this pack.
- Get the 2degrees mobile app and add the pack there.
- Text Buy 4GB to 233.
How do I get this pack?
It's really easy to join 2degrees, first choose the plan that you'd like, then once you're all signed up, simply choose the Add-ons that you need in Your 2degrees.
Prepay
300 min
Calls to international landlines and selected mobiles- Over 20 destinations.
- Valid for 1 month, auto renews.
$10 International Chat Pack
Call mobiles and landlines in the following destinations
| China | Hong Kong | India |
| Singapore | Korea Rep (Seoul) | United Kingdom |
| USA/Canada |
Call landlines in the following destinations
| Belgium | France | Denmark |
| Germany | Ireland | Italy |
| Netherlands | Norway | Poland |
| Portugal | Spain | Sweden |
| Switzerland | Malaysia | Taiwan |
| Thailand |
- This Pack is valid for 1 month and auto renews monthly, or when almost out if you have enough credit. If you purchase additional International Chat Pack(s), only your most recent International Chat Pack will renew.
- If your Pack does not renew because you don’t have enough credit then it will be put on hold for 14 days. To renew your Pack you will need to Top Up (min $10 Top Up applies) within the hold period, otherwise your Pack will expire.
- If you want to unsubscribe from your International Chat Pack's auto renew, simply text STOP INT300 to 233, or do it online at Your 2degrees. You'll still get to use any remaining minutes until your Pack expires.
- Calls to premium rate numbers in the applicable destinations are excluded.
- Calls are rounded up to the nearest minute.
- Check out the full Terms and Conditions.
$10 International Chat Pack
How do I get this pack?
Quick and easy instructions on how to get this pack:
- Login to Your 2degrees and go to Add Ons to get this pack.
- Get the 2degrees mobile app and add the pack there.
- Text Buy INT300 to 233.
How do I get this pack?
First you need to join 2degrees Prepay. Simply:
- Buy a SIM.
- Pop it into your phone.
- Make a call and off you go.
Unlimited*
Calls to NZ landlines- *Fair Use Policy applies.
- Valid for 1 month, auto renews.
$12 Unlimited NZ Landline Pack
- This Pack is valid for 1 month and auto renews monthly from the date of purchase if you have enough credit.
- If you want to unsubscribe from your Unlimited NZ Landline Pack’s auto renew simply text STOP NZLand to 233, or do it online at Your 2degrees.
- Calls to premium rate numbers in the applicable countries are excluded.
- Fair Use Policy applies to the use of this Pack. Check out our Fair Use Policy.
- Check out the full Terms and Conditions.
$12 Unlimited NZ Landline Pack
How do I get this pack?
Quick and easy instructions on how to get this pack:
- Login to Your 2degrees and go to Add Ons to get this pack.
- Get the 2degrees mobile app and add the pack there.
- Text Buy NZLand to 233.
How do I get this pack?
First you need to join 2degrees Prepay. Simply:
- Buy a SIM.
- Pop it into your phone.
- Make a call and off you go.
500MB
NZ data- Valid for 1 month, auto renews.
$10 Prepay NZ Data Pack
- Our 500MB Prepay NZ Data Pack is valid for 1 month. This pack will auto renew either at the end of validity period, or when you’re nearly out of data (if you have enough credit), or if you have autopay active on your Prepay account.
- If you purchase additional Prepay NZ Data Packs, only your most recent Prepay NZ Data Pack will renew.
- If you want to unsubscribe from your Prepay NZ Data Pack's auto renewal simply text STOP 500MB to 233, or do it online at Your 2degrees. You can continue to use any remaining data until your Pack expires.
- If you use up your data or do not have an active Prepay NZ Data Pack and continue to use data, you will be charged at our Standard Data Rate.
- Check out the full Terms and Conditions.
$10 Prepay NZ Data Pack
How do I get this pack?
Quick and easy instructions on how to get this pack:
- Login to Your 2degrees and go to Add Ons to get this pack.
- Get the 2degrees mobile app and add the pack there.
- Text Buy 500MB to 233.
How do I get this pack?
First you need to join 2degrees Prepay. Simply:
- Buy a SIM.
- Pop it into your phone.
- Make a call and off you go.
1GB
NZ data- Valid for 1 month, auto renews
$20 Prepay NZ Data Pack
- Our 1GB Prepay NZ Data Pack is valid for 1 month and auto renews at the end of validity period (or when nearly out if you have enough credit).
- If you purchase additional Prepay NZ Data Packs, only your most recent Prepay NZ Data Pack will renew.
- If you want to unsubscribe from your Prepay NZ Data Pack's auto renewal simply text STOP 1GB to 233, or do it online at Your 2degrees. You can continue to use any remaining data until your Pack expires.
- If you use up your data or do not have an active Prepay NZ Data Pack and continue to use data, you will be charged at our Standard Data Rate.
- Check out the full Terms and Conditions.
$20 Prepay NZ Data Pack
How do I get this pack?
Quick and easy instructions on how to get this pack:
- Login to Your 2degrees and go to Add Ons to get this pack.
- Get the 2degrees mobile app and add the pack there.
- Text Buy 1GB to 233.
How do I get this pack?
First you need to join 2degrees Prepay. Simply:
- Buy a SIM.
- Pop it into your phone.
- Make a call and off you go.
15GB
NZ data- Valid for 1 month, auto renews
$50 Prepay NZ Data Pack
- Our 15GB Prepay NZ Data Pack is valid for 1 month and auto renews at end of validity period (or when nearly out if you have enough credit).
- If you want to unsubscribe from your Prepay NZ Data Pack's auto renewal simply text STOP 15GB to 233, or do it online at Your 2degrees. You can continue to use any remaining data until your Pack expires.
- If you use up your data or do not have an active Prepay NZ Data Pack and continue to use data, you will be charged at our Standard Data Rate.
- Check out the full Terms and Conditions.
$50 Prepay NZ Data Pack
How do I get this pack?
Quick and easy instructions on how to get this pack:
- Login to Your 2degrees and go to Add Ons to get this pack.
- Get the 2degrees mobile app and add the pack there.
- Text Buy 15GB to 233.
How do I get this pack?
First you need to join 2degrees Prepay. Simply:
- Buy a SIM.
- Pop it into your phone.
- Make a call and off you go.
12GB
NZ data- Valid for 6 months, auto renews
$99 Prepay NZ Data Pack
- Our 12GB Prepay NZ Data Pack is valid for 6 months and auto renews at end of validity period (or when nearly out if you have enough credit).
- If you purchase additional Prepay NZ Data Packs, only your most recent Prepay NZ Data Pack will renew.
- If you want to unsubscribe from your Prepay NZ Data Pack's auto renewal simply text STOP 12GB to 233, or do it online at Your 2degrees. You can continue to use any remaining data until your Pack expires.
- If you use up your data or do not have an active Prepay NZ Data Pack and continue to use data, you will be charged at our Standard Data Rate.
- Check out the full Terms and Conditions.
$99 Prepay NZ Data Pack
How do I get this pack?
Quick and easy instructions on how to get this pack:
- Login to Your 2degrees and go to Add Ons to get this pack.
- Get the 2degrees mobile app and add the pack there.
- Text Buy 12GB to 233.
How do I get this pack?
First you need to join 2degrees Prepay. Simply:
- Buy a SIM.
- Pop it into your phone.
- Make a call and off you go.
150MB Data
- 50 mins to NZ & Aussie
- 150 texts to NZ & Aussie
5GB Data
- Unlimited* mins to NZ & Aussie
- Unlimited* texts to NZ & Aussie
Data Pinata
Requires active $11 or above 2degrees consumer plan at time of win to redeem prizes
Ends 19.01.25. Data prizes last 24 hours from win. Fair Use Policy applies.
One prize per day, per person but only one non-data prize per person may be won during the promotion. Non-Data Prizes must be claimed by 21.02.25. Redeemed via Data Clock app, see app for details. 2degrees may cancel or amend this offer at any time. T&Cs apply, see 2degrees.nz for full T&Cs
Samsung Galaxy S24 FE Offer:
Limited time or while stocks last. $200 Interest Free repayable if you end your eligible plan within 12 months.
Saving: $200 Interest Free saving available when you purchase interest free on a $50+ Pay Monthly Plan in a 2degrees store. Interest Free, Trade In, Plan and Promotion T&Cs apply. See 2degrees.nz for full T&Cs.
Samsung Galaxy S24, S24+, S24 Ultra Offer
Limited time or while stocks last. Save $300 repayable if you end your eligible plan within 12 months.
- Save $400 off the RRP on the S24 Series (excludes S24 FE) when you purchase Outright or on a Pay Monthly plan in a 2degrees store. Interest Free Save: Save $300 available when you join us and purchase a new Samsung S24 series interest free on a $65+ Pay Monthly or Save $150 interest free saving on a $35+ Group Plan in a 2degrees store. Saving repayable if you end your eligible plan within 12 months. Trade In and save on selected smartphones only. Phone must meet Trade In criteria including being fully functioning including no cracks or damage or other defects that go beyond normal wear or tear. Phone balance repayable if you end your eligible plan. Interest free, Trade-in, Plan and Promotion T&Cs apply. See 2degrees.nz for T&Cs
- Get $400 account credit when you purchase on an eligible Pay Monthly plan online. Interest Free Save: Save $300 available when you join us and purchase a new Samsung S24 series interest free on a $65+ Pay Monthly or Save $150 when you join us on a on a $35+ Group Plan. Saving repayable if you end your eligible plan within 12 months. Trade In and save on selected smartphones only. Phone must meet Trade In criteria including being fully functioning including no cracks or damage or other defects that go beyond normal wear or tear. Phone balance repayable if you end your eligible plan. Interest free, Trade-in, Plan and Promotion T&Cs apply. See 2degrees.nz for T&Cs
Samsung Galaxy Z Flip6 Series and Z Fold6 Series Offer
Limited time or while stocks last. Save $300 repayable if you end your eligible plan within 12 months.
- Save $400 off the RRP on the Z6 Series when you purchase Outright or on a Pay Monthly plan in a 2degrees store Interest Free Save: Save $300 available when you purchase a new Samsung Z6 series interest free on a $65+ Pay Monthly or Save $150 interest free saving on a $35+ Group Plan in a 2degrees store. Saving repayable if you end your eligible plan within 12 months. Trade In and save on selected smartphones only. Phone must meet Trade In criteria including being fully functioning including no cracks or damage or other defects that go beyond normal wear or tear. Phone balance repayable if you end your eligible plan. Interest free, Trade-in, Plan and Promotion T&Cs apply. See 2degrees.nz for T&Cs
- Get $400 account credit when you purchase on an eligible Pay Monthly plan online. Interest Free Save: Save $300 available when you join us and purchase a new Samsung Z6 series interest free on a $65+ Pay Monthly or Save $150 when you join us on a on a $35+ Group Plan. Saving repayable if you end your eligible plan within 12 months. Trade In and save on selected smartphones only. Phone must meet Trade In criteria including being fully functioning including no cracks or damage or other defects that go beyond normal wear or tear. Phone balance repayable if you end your eligible plan. Interest free, Trade-in, Plan and Promotion T&Cs apply. See 2degrees.nz for T&Cs
iPhone Series Offer:
Limited time or while stocks last. Save $500 repayable if you end your eligible plan within 12 months.
Save $500 available when you purchase a new iPhone interest free on a $65+ Monthly Plan or $150 interest free saving on a $35+ Group Plan in a 2degrees store. Saving repayable if you end your eligible plan within 12 months. Phone balance repayable if you end your eligible plan. Interest free, Trade-in, Plan and Promotion T&Cs apply. See 2degrees.nz for T&Cs
Oppo N3 Offer:
Limited time or while stocks last. Save $600 repayable if you end your eligible plan within 12 months.
Save $600 available when you join us and purchase a new Oppo N3 interest free on a $65+ Pay Monthly or Save $150 interest free saving on a $35+ Group Plan in a 2degrees store. Saving repayable if you end your eligible plan within 12 months. Interest Free, Trade In, Plan and Promotion T&Cs apply. See 2degrees.nz for full T&Cs
OPPO Reno12F Offer
Limited time or while stocks last.
Saving: $100 Interest Free saving available when you purchase interest free on a $50+ Pay Monthly Plan. Phone balance repayable if you end your eligible plan. Interest free, Trade-in, Plan and Promotion T&Cs apply. See 2degrees.nz for T&Cs
OPPO Reno12 Offer
Limited time or while stocks last.
Saving: $200 Interest Free saving available when you purchase interest free on a $50+ Pay Monthly Plan. Phone balance repayable if you end your eligible plan. Interest free, Trade-in, Plan and Promotion T&Cs apply. See 2degrees.nz for T&Cs
OPPO Reno12 Pro Offer
Limited time or while stocks last. Save $300 repayable if you end your eligible plan within 12 months.
Saving: $300 Interest Free saving available when you purchase interest free on a $50+ Pay Monthly Plan. Saving repayable if you end your eligible plan within 12 months. Phone balance repayable if you end your eligible plan. Interest free, Trade-in, Plan and Promotion T&Cs apply. See 2degrees.nz for T&Cs.
Samsung Galaxy Tab A9+, Galaxy Tab S6 Lite 2024
Limited time or while stocks last.
Saving: $50 Interest Free saving available when you purchase interest free on a $5 Sidekick Pay Monthly Plan. Interest Free, Trade In, Plan and Promotion T&Cs apply. See 2degrees.nz for full T&Cs.
Samsung Galaxy Watch7, Watch Ultra
Limited time or while stocks last.
Saving: $150 Interest Free saving available when you purchase interest free on a $5 Watch Sidekick Pay Monthly Plan. Save $250 Interest Free saving available when you purchase interest free on a $5 Watch Sidekick Pay Monthly Plan Interest Free when you purchase a Galaxy Z6 Series or S24 Series device combined in the same transaction. Offer is only available instore. Interest Free. Plan and Promotion T&Cs apply. Watch Sidekick plan: Can be added to any current Carryover, Endless and Group Plans (Boss Plan). Plan shares Boss Plan’s allocations, and mobile number for calls and texts. All plans must be on the same Account. International roaming is not available. See 2degrees.nz for full T&Cs.
JB Plans are not eligible for the purposes of 2degrees Interest Free phone promotional offers.
Free Carryover Data Promotion:
New customers on a $19+ Monthly Prepay Plans (excluding $85 Monthly Prepay Plan) or any of the fortnightly plans and port their number to 2degrees only. Bonus Data applied within 72 hours. One off data allocation. Bonus data lost if you do not maintain an active eligible plan. Minimum $10 Top Up applies. Plans auto renew with enough credit. 2degrees reserves the right to cancel or amend this promotion at any time. Plan and Promotion T&Cs apply. see 2degrees.nz for full terms
$80 worth of Freebies on eligible prepay phone deals:
Available on phones $85+. Credit for new customers only. One redemption every 90 days. One promotion per applicable purchase. Plan valid for 1 month, auto renews with enough credit.
Scratchy offer: Free $5 Sim card, $25 Prepaid Plan for all customers + new customers get $50 Credit applied as two $25 instalments after scratch code is redeemed. Min $10 Top Up applies. Scratch the code on your phone box & enter it online at 2degreesmobile.co.nz/redeem or text 229 by 3/11/2024. Credit applied as a one-off instalment after scratch code is redeemed. Plan and Promotion T&Cs apply. See 2degrees.nz for full T&Cs.
Student Perk Offer:
Available to under 25s and students enrolled at a tertiary institute or secondary school who sign up to an eligible plan. Bonus 1GB NZ data applied on Friday nights and expires on Sunday at midnight. See 2degrees.nz for full T&CS.
Trade In Terms
Trade In selected smart phones to purchase a new phone on Interest Free with eligible Plan only. When you trade in your phone at a 2degrees store, the value of your Traded in phone will be deducted from the Interest Free balance of your new phone purchase at sign up. If you Trade-in through 2degrees online, the value of your Traded in phone will be credited to your bank account once it is accepted by our Trade-in partner, Moorup. Trade-in value varies by phone make and model and must be in good working condition, with no screen cracks or other defects that go beyond normal wear & tear. One Trade In transaction per eligible Plan per qualifying campaign. Multiple phones may be Traded In to purchase a single new phone. After Trading In, your Interest Free balance must be $120 or more. No refunds or other account credits. Trade In value is non-transferable and cannot be exchanged for cash if it was deducted from the Interest Free balance. We reserve the right to amend or cancel this offer at any time. Trade In, Interest Free and Plan T&Cs apply.
Endless Data Plans
Max speeds reduce each after Max speed plan allowance & 100GB/m of free hour data^.
*Fair Use Policy applies. ^At reduced speeds experience is impacted.
Max data speeds reduce each: after allocated Max speed Data plan to 1.2Mbps; and after 100GB/m of free data to 1Mbps. T&Cs apply.
Wireless Broadband Bundled Discount
If you have an existing Pay Monthly mobile plan with us, you are eligible for a $10 discount per month on your Wireless Broadband Plan. This discount may not be visible immediately after you add your preferred Wireless Broadband Plan to the cart. To enable this discount, after checkout you need to verify your mobile number by
Unlimited Plans:
*Max speeds on Unlimited Plans reduce to 1.2mbps after allocated plan data, per person. At reduced speeds you can mostly use your data on your phone the same as before but image quality, loading times and high-speed applications will be impacted. Fair Use Policy applies.
After 100GB: You can mostly use your data on your phone the same as before including listen to music, browse online, Zoom call, stream, download stuff, watch movies but the image quality will be lower (particularly hotspotting to a big screen), it’s not suitable for HD video, there may be buffering/interruptions, some high speed gaming and applications may not work and loading large files may take longer. Click here for more details. Unlimited mins/texts/data: Standard NZ and Aussie mins and person to person text, excl. premium rate numbers (eg short codes). Calls rounded up to the next minute. NZ data usage only. Excludes picture messages & video calls, standard rates apply. Click here for full T&Cs.
Unlimited Calls and Texts to NZ & Aussie:
Calls and texts to Norfolk Island and Australian Antarctic Territory are excluded.
Free Data Hour every day:
Max speeds on Data Clock reduce to 1mbps after 40GB/month, per person. *Fair Use Policy applies.
If you have an active current Prepay Plan or Pay Monthly Plan and register on the Data Clock app you will get 1 free hour of data per day. See www.2degrees.nz/data-clock for details on registering for the Data Clock app. Free data hours immediately expire if they aren’t used each day. *Free Data Hour not available on $8 Monthly Prepay Plan. Not available in conjunction with any other promotions. 2degrees may amend or cancel at any time. T&Cs apply.
Carryover Plans
Standard NZ and Aussie mins and person to person text, excl. premium rates numbers. Calls rounded up to the next minute. NZ data usage only. Data can be carried over for up to 12 months from the first allocation. Max 20GB can be transferred if plan downgraded. Plan data used first then Carryover Data.
