how long do you or can you talk to anyone on your mobile?

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my old friend again rang up after last evenings long meet. i thought to put it down after speaking a few minutes.but then the discussion went so long that my ear almost got wet with sweat and my mobile got hot a little . OMG lol. after i put down the ultimately, i received a message 'your account balance is almost finished. you should recharge your account soon' . so stupid of me, i could even talk to him later personally in the evening as he was in the same town. but the talk went on so long unnoticedly. i never talked to anyone so long and was surprised to check the last call duration was 48 minutes. lol again. so i decided to limit my talking time to maximum of 5 minutes now on. what about you? how long do you or can you talk to anyone on your mobile? how long did you ever talk on your mobile? share your experiences.