Thanks for the info Dave1 but I think I read somewhere installing e unlocks the phone. Just want to see if anyone can confirm. I am not a T-Mobile customer (I’m in Canada) just looking at purchasing a T-Moblie phone online.
NO, you must reinstall stock ROM to be abble to unlock the carrier limitation, then install /e/ again
Phone must have 6 mounths or one year old to be carrier unlocked
If you haven’t purchased the phone yet, then buy it from the phone manufacturer already unlocked. It’s much better flashing a custom rom of any kind to a neutral phone rather than a phone you’ve bought from a mobile carrier.
No. To install a custom ROM, the bootloader must first be unlocked, and you won’t be able to do that unless the carrier consents to remove the carrier-lock. (Or at least, I’m fairly sure of that.)
In the U.S., it’s common for a carrier to sell phones that are locked to their network, so as to prevent you from buying a subsidized device and then jumping ship to a different provider. The carrier will generally unlock the device for you after it’s fully paid for, or after you’ve been a customer for a while. And sometimes if you’re traveling overseas, they’ll unlock it so you can use a foreign SIM card, if you’ve been a customer for a while.
If you buy a second-hand carrier-locked phone, from Amazon, for example, I’m not sure what the outcome would be if you asked the original carrier for an unlock. Maybe they don’t mind doing it, as the phone has presumably already fulfilled the requirements of use on their network (by the previous owner). You could ask T-mobile USA support prior to purchase to find out what the policy is.
If you’re buying a brand new Tmobile-locked phone from a retailer like Amazon, Best Buy, etc., there is almost zero chance you can get it unlocked without using it on Tmobile’s network for the required duration.
It’s much easier to start with a phone that is not carrier-locked in the first place.