Voice call

 Here we present the results for voice call services.


Experiment details


Power consumption when making and receiving a voice call.



Technology used:


Number of tests:



During the measurements the other air interfaces (BT and WLAN) are switched off.



The power values for the calls have been obtained by making a phone call of five minutes duration between two phones for each test. Then the average of the power consumption of the two phones for all the tests has been calculated. The power consumption during the idle time has been calculating averaging the power levels over eight hours of idle mode.

All the tests have been performed using a SIM card from Sonofon in Aalborg, Denmark.

Results show that making a call using GSM costs 46% less energy and receiving a call costs 50% less energy than using UMTS. Being idle while connected to a GSM network costs 41% less than UMTS.

Power consumption when the phone is connected to GSM and UMTS networks in idle mode.
In this scenario two phones are having a phone call. The Figure shows the power consumption of two phones: the one making and the one receiving calls in two different cases: when the phones are connected to GSM and UMTS networks.

Parametrized model

Energy = P_action * DurationAction


Scenario GSM UMTS
Receiving a voice call 612.7 mW 1224.3 mW
Making a voice call 683.6 mW 1265.7 mW
Idle mode 15.1 mW 25.3 mW

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Last update:27-05-2009