BT Mobile is a Mobile Virtual Network Operator (MVNO) which uses EE's mobile network (also owned by BT) to provide its mobile coverage.
In our most recent customer service poll, BT Mobile scored 6.7/10 based on 153 votes.Sadly not. BT Mobile says that it will carry out a credit check as part of an application with it.
The cheapest BT Mobile Sim costs £13/month and it currently offers unlimited minutes & texts and 5GB/month data over a 24-month contract. If you have BT Broadband already, you can get it cheaper. See cheap BT Mobile Sims.
Yes, you can keep your old mobile phone number. If you're moving from another network, you'll need to text 'PAC' for free to 65075 to request your PAC (porting authorisation code). You will need to provide this to BT Mobile which should move your number over within one working day.
Yes, BT Mobile offers 5G on all of its plans. However, be aware you'll need a 5G-compatible phone too.