Opening any app takes ages. Closing any app reloads the stock launcher. She doesn't have any widgets except the weather one. She only uses Whatsapp, Chrome and FB(the only horrible app on the phone). I have disabled in settings every app I can. The free RAM is constanly less than 100MB.
The phone was never rooted. I'm wondering can I do anything with this if I root it? Will I see any benefits? I'm reluctant to put any custom ROM because she won't find her way around(she ain't very tech savy). What can I do to make this phone semi-usable?