March 12th, 2011, 09:56 PM
Thread Author (OP)
Join Date: Mar 2011
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Manual of Galaxy 551 specifies
"When you subscribe to a cellular service, you will receive(USIM) card"
a Subscriber Identity Module (SIM) card, with subscription
details, such as your personal identification number (PIN)
and optional services. To use UMTS or HSDPA services,
you can purchase a Universal Subscriber Identity Module
Any further info on this?