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T-Mobile phones with 3G wireless broadband eventually would need to be replaced. AT&T would offer new phones with access to AT&T's 3G network, but it's not clear what the deals would be. It could take a year for AT&T to turn off T-Mobile 3G.

More phone choices for T-Mobile subscribers.

Fewer pricing plans.

No more unlimited data plans.

Better network coverage.

Wider rural broadband coverage.

The big question is whether the combination would let AT&T, Verizon and Sprint raise prices on wireless service once competition from T-Mobile disappears.

ASSOCIATED PRESS