I wonder if you guys have found that sometimes our iPhone always quickly runs out of battery when we play games or talk too much. That makes me annoyed when I`m happily talking with my friends or family members. Would you have any ideas to solve it or something to improve it? I heard that a external battery for our iphone is a better way. However, which external battery is better? I learnt that SINOELE iPhone emergency battery from Internet. Does anyone know much about it? please help to introduce more. Thank you so much.