Transfer SIM to new 4G Doro 6820, need to keep all texts on old 3G Doro 6620
Hello all,Hope you can help.My elderly mother has an old Doro 6620 Unlocked 3G phone, which now struggles to find a 2G signal/function now that 3G coverage has been turned off in our village. Due to this we have purchased a Doro 6820 Unlocked 4G phon...