Chosen Solution

changing to an iPhone 6 or 6s+ can I move the simm card from my iPhone 5 over so as to start using it after restore.

@sundaydriver yes you can. Same size: Apple iPhone 5 Nano SIM Apple iPhone 5c Nano SIM Apple iPhone 5s Nano SIM Apple iPhone 6 Nano SIM Apple iPhone 6 Plus Nano SIM Apple iPhone 6s Nano SIM Apple iPhone 6s Plus Nano SIM Apple iPhone SE Nano SIM Apple iPhone 7 Nano SIM Apple iPhone 7 Plus Nano SIM

yes you can, they use the same size sim card