The child's tablet began to slow down terribly, and sometimes it did not open educational applications at all. I showed it to this service center, where they promised to check everything for free. It turned out that the cache and outdated firmware were clogged, so the device was freezing. The wizards cleaned everything, updated the system, and the tablet is flying again. I paid a moderate amount for the service, and I wasn't asked for any additional expenses. The guarantee was given, which is nice. Now my son can study and play in peace, everything works as before.