I have given my wife my unlocked a10, she has tried to put her tesco sim
in but phone says not registed with network. O2 have told me my old
phone is unlatched and needs no code
Upgraded my phone, transferred everything from old handset to new one.
Then activated new sim. Now need to unlock old handset so grand daughter
can use as we dont have anyway of keeping in touch in present lockdown
situation
