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I have unwanted apps and games on my cell phone. I can not remove them either. They only take up space. Need Help!!!!
Hi @JansBass, welcome to our forum!
What @najodleglejszy wrote is correct, some applications can't be uninstalled.
However if you follow his instructions and you disable the application, the application will also be replaced by the factory version of the application which is generally smaller in size compared to the fully updated version. Which will lead to you getting some extra free space on the internal storage!
I hope that helps! 
Thanks so much Jonas for your comment... But unwanted apps got 150 mb of space in my internal memory, and I need that space.
I can move apps to external memory but theres a problem when I want to update.. There's an error!.
Apps moved to a external memory can't be updated!!...
Hi again @JansBass, sorry for my late reply. I have been on vacation.
If you can't update applications on your SD card, could you try moving them back to the internal storage of your phone > update them again and then transfer them back to your SD card?
To move the application back to the internal storage, go to Settings > Apps > name of the application > Storage > Change > Internal storage.
Let me know if that helps!