16-11-2016, 02:09 PM
Agree with everything Jeffrey says - many phones are locked to a particular network because under the deal between the phone manufacturer and the network, the network can offer the phone cheaper that way.
If you then try to use a locked phone with a SIM car for a different network, it won't work - you have to get the phone "unlocked" first. This may or may not be a legal thing to do, as explained above.
e.g. you buy a phone locked to O2. You put in a new Virgin pay-as-you-go SIM - the new SIM will not register to the Virgin (or any) network until the phone is unlocked. If you use a pay-as-you-go O2 SIM, it will work (same network as the one the phone is locked to).
Basically, you should also do a "factory reset" on the phone to erase all non-operating-system data on the phone, i.e. all pictures, SMS messages, email, yada yada yada...
If you then try to use a locked phone with a SIM car for a different network, it won't work - you have to get the phone "unlocked" first. This may or may not be a legal thing to do, as explained above.
e.g. you buy a phone locked to O2. You put in a new Virgin pay-as-you-go SIM - the new SIM will not register to the Virgin (or any) network until the phone is unlocked. If you use a pay-as-you-go O2 SIM, it will work (same network as the one the phone is locked to).
Basically, you should also do a "factory reset" on the phone to erase all non-operating-system data on the phone, i.e. all pictures, SMS messages, email, yada yada yada...
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