How long will the battery life last for?

I've got an iPhone 4S I've had it for 2 year now I'm going on holiday soon and the flight is 3 hours long and I'll be listening to music through out the journey will me battery life last for 3 hours if I listen to music?

Is your flight in less than 3 hours? If not maybe try it…

Shlonak ana arabi
Mu mushkila you buy china batary laa badhain after you charge u keep in your *** la.

You have had it 2 years and you don't know. Lol… Why don't you just try it out, just listen to music before you start your holiday to see how long it lasts then charge it up. Don't forget using some electronic equipment is banned on aircraft. Check with airline before you fly

Yes it should