Can you put another sim in a carrier phone?
I’m looking for a new phone (iPhone specifically) and didn’t want to spend the whole amount and was wondering what the case is with buying with a carrier? I get that you can only put the carriers sim, but can you put any other carrier’s SIM card in the second slot too? Or if you travel can you put any other carrier’s esim or any local SIM card as well? Granted you still have the original carrier’s SIM card in as well? Would it come locked or unlocked? If I’m still paying the monthly?