How to reinstall Android on Polaroid PSPT350 Some months after i bought my cellphone it begans to download many apps by itself and now it simply doesn't work. Every time I turn it on, a think called "Mlhiw" don´t let me use it and turn off my cellphone. So I want to reinstall Android on it. It have Android 4.4.2. And I have no idea about how to reinstall it.
You don't need to reinstall Android in order to "clean" your device.
You just have to go to settings>Back up and reset>Factory reset the device (the names may vary from device to device) but are like this.
So when you do this, what really happens is that the device is restored to a new device (just as you bought).

Take in mind that all your data will be erased, so back up your data first.