Long and strong battery Gionee Marathon M4 is undoubtedly the appropriate choice for people who do not want to carry an extra battery for charging their phones or for those, who do not have access to charging points. The new smartphone comes with 5,000 mAh battery which boasts of a 440 hours standby time. With normal usage, the phone can run for two and a half days on fully charged battery and also comes with excellent power saving mode. Not just that, with a large battery, the smartphone can even act as a power bank for other devices. Praiseworthy performance Apart from the battery, the smartphone also comes with 8MP rear camera with 5MP front-camera and the apps load quite fast. With Quad-core 1.3 GHz Mediatek MT6735 processor, Amigo 3.0 UI based Android Lollipop and 2GB RAM, the smartphone can also support regular activities in an effective manner. Though the phone is a bit heavy and does not offer a catchy design, it is the best choice for people, who do not want their phone battery to get exhausted while going home.