Combien de temps il faut charger un nouveau telephone portable

False, the phone (the recent ones anyway) manages the battery charge, you can leave it plugged in for 12 hours if you want, it won't damage the battery at all, the phone will simply maintain the battery charge.

It's not true; you shouldn't let it charge for more than 4 hours as it damages the battery.

I read on the notice that it shouldn't be charged for too long, otherwise it gets damaged, but how long should it be plugged in for the first time? It wasn't indicated on the notice, so I'll leave it until it's fully charged and normally it should work.

I was told to leave it for 24 hours when I bought it!!! And then it’s good
thank you goodbye!!

Yes, it’s better to turn it off; it charges better even for the future.

It has been a long time since you used your cell phone, but I'm posting to avoid someone making the same mistake as you. You should never, and this is a golden rule, listen to the salespeople! Most of the time, they don't know anything at all; it's unfortunate, but for one competent person, there are ten who are not. Li-ion batteries do not overcharge; when the indicator shows that the battery is full, it is full, and that's it! Moreover, manufacturers state this in the manual, and to benefit from their warranty, you must follow their advice! It's the same for the really bad advice of letting cell phones discharge several times to optimize their battery. First of all, a modern cell phone with a Li-ion battery will never discharge completely for safety reasons; the phone shuts off when the level is too low, and the phone needs to be recharged.

Merci pour l'information fredom1989, parce que je viens d'acheter un GSM Samsung Galaxy Ace Hugo Boss, et je ne sais même pas combien de temps il faudra le charger.

I have a brand new Samsung Champ and I let it charge for at least 7 hours.

Is it bad to wait until it's completely discharged? The seller asked me to charge it, and I didn't know it needed to be discharged beforehand.