Send one text msg a month and you’ll keep the credit, set a reminder on you’re main phone to send the msg if you’ll struggle to recall.
That said I have some Vodafone payg sims and I think they are 90 days?
I have a spare phone that I keep in the car for emergencies. The sim card has a £10 credit but, if not used, runs out at end of month. Are there any that can be credited with a few quid and just stays there until used?
Send one text msg a month and you’ll keep the credit, set a reminder on you’re main phone to send the msg if you’ll struggle to recall.
That said I have some Vodafone payg sims and I think they are 90 days?
Tesco Mobile doesn't run out, although you may have to send a message occsionally. When you top up they add on triple free credit which does only last a month, but the paid for amount doesn't seem to expire.