My experience with Onesimcard.

[OneSimCard]

Originally Posted by Grampa

I ordered one of these under the United Mobile replacement program. No risk there. My only hesitation about adding funds is that the funds apparently expire after 10 months and the minimum recharge amount is $25. After two years, the number itself is lost. If you don't travel that much, you could be leaving a lot of money on the table just to keep the card active.

Grampa, congrats on taking advantage of the United Mobile replacement program. Your balance will expire 10 months from the last recharge, but it will keep rolling over as long as you add the minimum amount at least once every 10 months. There's no need to add a lot of airtime in advance, you can just set up auto-recharge.

If your balance does expire, you can always add funds later when you are ready to travel. The phone number and SIM itself will never expire as long as you make or receive at least one call every two years. If you don't plan on traveling for the next 2 years, just call yourself once before it expires to get a new 2 year window.