Why are some smartphones not compatible with certain carriers?

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Why does it matter what SIM card I put into a device?

In: Engineering

3 Answers

Anonymous 0 Comments

the phone is heavily subsidised by the carrier. so for that reason the handset gets locked to the network so they can recoup their investment. if you have a contract with the carrier after a period they will gife you an unlock code to remove the bar and the phone will become sim free.

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