Samsung hasn't revealed anything about the Galaxy A15 4G and Galaxy A15 5G that we've been hearing about for months. However, a number of leaks have given us a good idea of what to expect from these smartphones. And while we wait for official details about their debut, the Samsung Galaxy A15 4G has been certified by Thailand's NBTC, moving it a step closer to launch. The listing of the Samsung Galaxy A15 4G on the Thai certification body's website confirms that it has the model number SM-A155F
