My touchscreen goes wild. Its like its sort of 'lagging' a bit. When I touch somewhere on the screen it reacting in a whole other place. H

This is one link that shows how in pdf (however if you provide your exact model and operating system, you can get a clearer answer) https://www.lenovo.com/shop/americas/content/user_guides/a720_ug_en.pdf
touch screen starts on page 12
2.1 Touch Screen Calibration Prior to first use or whenever the touch screen reacts in a different place where you are touching it, start the calibration program. The procedure is as follows: 1. In Windows 7, Select "Start" - "Control Panel". 2. In Control Panel, select "Hardware and Sound". 3. In "Hardware and Sound" window, select "Tablet PC Settings". 4. In "Tablet PC Settings" dialogue, click "Calibrate" button. 2.2 User Gesture Instructions for the Touch screen The Touch screen supports single touch and rotational movements, enlargement and reduction multi-touch operations, and the user can transmit position information to the computer via touch. The touch screen uses a very low pressure movement recognition method, which only needs the finger to move lightly on the computer display screen or make a simple hand gesture to be detected by the main computer processor.

b> The Touch Pro2, manufactured by HTC, is a smartphone designed to be used with the Verizon wireless phone network. This smartphone combines a cell phone, PDA, MP3 player and wireless Internet access into a small, portable device. If the device begins malfunctioning or freezing, you can perform a soft reset. A soft reset does not delete any of your saved information. It shuts the phone down and reboots the phone to the Verizon Today Welcome Screen.

Pull the stylus upward to remove it from the side of the phone. Push the back cover upward using your thumbs until it pops from the back of the Touch Pro2 phone. The back cover can then be lifted away and removed from the phone. Press the "Reset" button, on the upper, left side of the back panel using the stylus tip. The device will now restart and display the Verizon Today screen. Snap the back cover back onto the back of the phone. Touch Screen is Not Working
As most tablet PCs ,Phones and Mp3 players are full touchscreen devices, you use your touchscreen for everything you need to do on your Tablet PC. If the touchscreen stops working, you can't get much use out of your Tablet. Touchscreen issues are caused by hardware or software problems, but check with your manufacturer before attempting a DIY repair.

Hardware Issues Damages to the surface of your Tablet PC can cause the touchscreen to malfunction or stop working entirely. For example, putting pressure on the screen, such as placing the Tablet PC in a bag with other heavy items, can cause cracking along the screen. Exposing the screen to water, even in small amounts, can cause the electrical system within the touchscreen to malfunction. If the electrical system malfunctions, the touchscreen stops working properly. b> Screen Sensitivity b> Pressing the touchscreen on your Tablet PC sends a signal to the internal motherboard. The motherboard then transmits to other components, such as the hard drive. The accuracy of the touchscreen depends on the screen's sensitivity. Many Tablet PCs include a program for calibrating the touchscreen. This program may fix minor responsive issues. Even a small amount of dirt or debris can effect how the touchscreen responds. Cleaning your touchscreen with an electronics cleaner or a microfiber cloth may help improve sensitivity. b> Software Issues b> A driver is a software program that interacts between hardware devices and an operating system, Your Tablet PC needs the right drivers for your OS to work correctly. Outdated or missing drivers can cause the touchscreen to work improperly, or not respond at all. Visit the manufacturer's website to find the right drivers for your Tablet PC. b> Repair b> While you can perform some minor repairs yourself, such as re-calibrating the touchscreen sensitivity or installing drivers, only perform a hardware repair if you have a good working knowledge of electronics, specifically Tablet PCs. Before attempting to repair your device, contact your manufacturer. If your Tablet PC has a warranty, completing an unauthorized repair may make you ineligible for claiming that warranty. Hope this helps

b>

Hello

Do not put lotion on your hands and do not touch the screen if your hands are wet. Any kind of moisture can affect the way the touchscreen operates. Moisture sometimes slows the response time from the screen to the operating system.

Check for a protective sheet on the screen. If there is some kind of a film or sheet on the touchscreen, the screen is likely not able to react to all of the sensitivities of the touch of a finger as it normally would.

If there is an application open and the touchscreen seems to not be working, simply close the application and retry it. A frozen application can usually be closed by pressing and holding on the circular button located just below the touchscreen.

Completely reset the phone by holding the "Home" button and the "Reset" button for a full 10 seconds until the phone resets.

THANK YOU FOR VISITING FIXYA

Try calibrating the screen. Go to Settings > Local & text > Touch Input > Text Input > Calibration Tool
Good luck.

Hi did you replace the shell an now the touch screen isnt working
If so you either have damaged the P6 conecter where the touchscreen goes or it is not in far enough or needs a new 1 can be sorted for a reasonable price i fit a lot of them

The touch screen is faulty. Only service centre can fix this problem byreplacing the screen.

try hard reset. but do an back up as it'll wipe out everything from phone.

you can find it on ebay. I could but I am at work for another month away from home. The screen and battery both can be done for 100 to 125 I would think

Here's what you do: Turn off the gps. Then, hold the power button for approximately 30 seconds. The calibration screen will appear. Follow the instructions to re-calibrate the touch screen.

That\'s unfortunate because the phone is mostly touch-controlled.

Do you have a screen protector installed? Some people have said that the MING is one of the few touchscreen devices that doesn\'t work well w/ screen protectors. Try taking yours off if you\'re using one.