Mobile tricks n tips: Secret codes for other phones- Spice, Philips, BenQ..: "Secret codes - Spice :
S404 enable COM port: *#42253646633# -> Device -> Set UART -> PS -> UART1/115200
S410 engineer mode: *#3646633#
S900 software version: *#8375#
S900 serial no: *#33778#"
A (nearly) complete list of every MVNO that uses AT&T's towers
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As the second largest carrier in the US, AT&T has coverage all over the US.
These MVNOs lease parts of AT&T's infrastructure for prepaid plans.
8 minutes ago