BLU phone 4.0 L turns on but does not allow my touch screen to work. Do you know how to fix this problem

Touch Screen Not Working Android Problem [Fix] - TechKhoji

www.techkhoji.com > Android

Feb 27, 2014 - Is your Android Touch Screen not working or being unresponsive? ...This will wipe your phone/tablet and return it to its original condition. ... a replacement for a glass broken? will I not reboot my phone and then it will work? .... My zenfone5 was dropped into water and some part of the screen isn't working.

iPhone Screen Not Responding - how to fix? - Tech-addict

www.the-tech-addict.com/iphone-touch-screen-not-working/

Nov 22, 2015 - Although the touch screen problem doesn't occur that easy, but still one can come ... Steps to fix if your iPhone Touch Screen not working properly ... to perform a factory reset i.e. restore your iPhone to its original factory settings. ... Touchscreen devices like iPhone, iPad, Tablets etc. are not only quite costly ...

Dropped phone, screen doesn't work. What repair kit do I need ...

forums.androidcentral.com > ... > Samsung Galaxy S3 > Sprint Galaxy S3

Sep 11, 2013 - When I try the unlock pattern on teh touch screen it does not work. ...the glass there does appear to be a spot that isn't the glass that is physically broken.... And I'm pretty sure once you get the phone disassembled, its just plug and ....Although I only had to do 1/3 of what was in them, they really are great for ...


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Tf810c Touch screen wont work ' TabletPCReview.com - Tablet PC ...

forum.tabletpcreview.com > Forums > Windows Tablet PCs > Asus

Feb 24, 2013 - 10 posts - ‎4 authors
If it's greyed out, there is no data to reset, and it's not that causing the issue. ... wentall wonky, swipe for charms wont work, can select anything ... I tried the hard reset and low and behold my touchscreen started working again.

Nexus 7 (2013) erratic touchscreen & keyboard - Google Product Forums

productforums.google.com/d/topic/nexus/W0Hfkq8hf-c

GoogleJul 30, 2013 - I've used some touchscreen test apps and "ghost" touches would ... Myoriginal Nexus 7 (2012) didn't do this, nor did my Gnex or any of ... If it's software, I don't mind hanging onto it until a fix is released. ...... I can't believe no one has saidanything about the touchscreen not responding at all to touches I've ...

XPS 9530 touch screen stops responding (how to fix) - General ...

en.community.dell.com/support-forums/laptop/f/3518/t/19534511

Dell
Dec 1, 2013 - 15 posts - ‎7 authors

1. From a Home screen, touch Apps
Settings.
2. On the Bluetooth tab, touch the OFF / ON icon
to turn Bluetooth on.
3. Enable the target device's discoverable or visible
mode.
4. Touch the Bluetooth tab and then touch Scan. Touch
Stop at any time to stop scanning.
5. From the list of found devices, touch the target device,
then follow the prompts to complete the pairing:
• If the target device requires a PIN, enter a PIN for the target
device and touch OK. When prompted, enter the PIN on the
target device.
• If the device allows automatic or smart pairing, your device
attempts to pair with the device automatically. Follow the
prompts on your device and the target device to complete the
pairing.

Hi Guangjie It sounds like you need to a hard reset on the tablet. Before you do that hook the tablet up to your pc. You will need to see if you can reload your information back on to the tablet. Your PC will see the tablet as a portable device or if you have it setup as your tablet.. Now the PC should get you the option to sync tablet. Do not do that if your PC can see the tablet. Stop everything your doing go back to target and have them help you. Do you have all your information copy on your PC? This is important because target will do a hard reset right off the back. If this your first hard reset and you don't have a lot information it is no problem but if you have a lot of it then your going to need to look for a recovery program. I'm not sure if you know but you have a manfacture one year warranty. the reason I'm saying to go back to target is they my give you a replacement. But you want target involve because they can assist you with getting in touch with the manufacture. Also I think Proscan is a target private label.

I’m happy to help further over the phone at https://www.6ya.com/expert/ronald_e152e07e272e4f27

try doing this:

Volume Down + Home + Power at the same time during power up. This will put it officially in download mode. When "Downloading..." is again displayed take out the battery, wait 30 seconds and reinsert it (don't connect the charger or any cables)

Let me know what happens..

One of the iPhone's greatest features is its highly intuitive touch screen.
Unlike other electronic device touch screens, your iPhone doesn't operate using the blockage of light to decipher which keys and commands you're pressing.
This makes it a viable choice for cell phone users who may not be able to complete other types of commands.
While you cannot alter the sensitivity of your iPhone, you can toggle certain features that make your phone easier to use.
How It Works

The key to understanding the sensitivity level of your iPhone's touch screen is first understanding how the touch screen actually works.
Instead of detecting light blockages or heat to interpret your finger's movements, the iPhone actually has a grid that lies underneath the surface of the touch screen.
When your finger touches the screen, electrical impulses detect the area on the grid that you're touching to interpret the letter, command or motion you're making to issue the correct response.
Screen Sensitivity
While previous models of the iPhone did offer the ability to change the screen sensitivity and the speed by which your phone responds to commands, the iPhones 4 and 4S no longer offer the option.
Instead, the touch sensitivity on newer phones is automatically calibrated for the fastest speeds, which means your phone responds quickly to your touch.
If this frustrates you and results in commands and calls you didn't mean to make, locking the screen by pressing the button on the top right-hand rim of the phone helps stop unwanted commands.
Assistive Touch
Update iPhones running on iOS 5 with an option known as "AssistiveTouch," which allows users who may not have complete control over their bodies and motions to use the iPhone.
This program allows you to change the speed at which the phone responds to your touch.
By tapping the "General" icon, then touching "Accessibility" and "AssistiveTouch," you'll enter the assistive touch menu.
When you turn on the option, an overlay appears on the screen that allows you to give commands by touch, rather than by shaking, swiping or pinching the screen.

When setting up AssistiveTouch, you'll have the opportunity to select your command tracking speed, which deals with how sensitive your iPhone is to your various gestures and custom commands.
Case Issues
Your touch screen isn't the only place where your phone is sensitive to movements.
Your iPhone has a feature called a proximity sensor.
The role of the proximity sensor is to sense the closeness of your face during a phone call. When the phone senses that your face is close to the phone, it locks your screen to prevent you from accidentally activating the touch screen with your cheek or ear.
This is handy, except when the proximity sensor is partially obscured by a case and is no longer sensitive to the position of your face.
The proximity sensor is found on the upper right-hand corner of your screen, so ensure that it remains uncovered to preserve its sensitivity.

http://www.gadgetvenue.com/how-the-iphone-touch-screen-works-02223447/


http://www.appleinsider.com/articles/11/07/11/inside_apples_ios_5_assistive_touch_allows_accessible_gesture_commands/

re install the os

You should have LCD or Touch Screen Replaced.!
www.buyforapple.com

The following are instructions for calibrating the Leapster™ handheld.(1) Insert a cartridge, turn the unit on and wait for the sign-in screen to appear.(2) Hold down the Home, Hint and B buttons simultaneously.(3) When the screen changes, press the A button.(4) Using the Stylus, touch the center of the targets.

I've tried the Home and A button several places... and it seems to work for others but not me :( I was about to give up then I found another way to reset the screen - Hope it works for you!

1. Unit must be OFF and NO cartridge
2. Hold down the HINT (?) button while turning the unit on
3. When Leapster menu screen appears, press the A button
4. Touch each of the cross hairs that appear with the stylus
5. Restart unit