Phone guides

These guides cover the problems phone owners hit after a purchase or an update, with extra detail for Mexico: losing service, moving a line to eSIM, deciding whether to install an update, and checking whether a phone bought abroad will work with a Mexican carrier.

Signal and carrier problems: the SOS-only guide orders the checks from the most likely cause in Mexico, a line suspended for missing CURP registration, down to hardware. The iPhone 18 Pro Max guide covers the SOS bug on AT&T that Apple confirmed and what iOS 27.0.1 and a carrier update do about it.

Lines and imported phones: the iPhone 18 Pro is eSIM-only in Mexico, and the eSIM guide shows how to move a Telcel, AT&T, Movistar or Bait line. The imported-phone guide compares a phone's bands with the ones Mexican carriers use and lists what only the carrier can confirm, such as VoLTE support and IMEI status.

Updates: according to Apple, iOS 27.0.1 fixes the iPhone 18 Pro Face ID restarts, and the update guide says who should install it now.