If you have our UK phone sim card and you're staying longer than 30 days, you can recharge and get another 30 days of your plan.
Here's what you need to do:
1. Purchase a Three UK Top-Up voucher. You'll need to go to a convenience store, supermarket or Three UK Store, or anywhere you see the green top-up logo. Make sure to purchase a £20 Three UK Top-Up voucher.
2. From your phone, dial 444 to redeem the Top-Up voucher. You can buy the Top-Up voucher at anytime, and hold onto it until you want to redeem it.
3. Once you have redeemed your Top-Up voucher, hang up.
4. From your phone, dial 333. You'll hear an automated menu. Press 2 for "additional allowance", and then press 1 for "all in one Add Ons". Then choose the "All In One £20" Add On, to get another 30 days of 12GB data, 300 minutes and 3,000 texts.