This is from the Zamzung spec:
Battery
Talk time*: up to 21 hrs (2G), 11 hrs (3G)
Standby time*: up to 900 hrs (2G), 790 hrs (3G)
Ultimately it can also be the very basic thing JR8 suggested - different sensitivity of the receivers/gain of antennas. While the Nokia may have it .....
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