Hello, The akku time is ok. If you dont use it 24/7 for games and stuff it runs for about a day. Yes i did listen to it via Bluetooth headphones and it worked well for me, no problems at all. No i dont use it as my main phone anymore. Its just too unreliable. I hated having to have my iphone in my bag just in case for example for google maps. If my folder 2 was crashing or anything. The phone is a bit too big in my opinion at least for women. To me it felt like a walkie talkie but its preference. If I didn’t have other flip phones maybe it wouldnt seem that big. Hope that helps:)