Repair shop
If resetting your device to factory settings did not resolve the issues you experienced, it might be best to take the device to a repair shop. Before you do this, it is important to backup any data on your device and also make sure to protect your device, sensitive files and apps with a password or a PIN.
Before choosing a specific repair shop, do a simple online search and try to find the ones with the best online reviews and positive comments.
Password Data backup Digital hygiene Phone/Tablet Computer/Laptop Device reset