A customer brings in an iPad — the screen lights up, apps are visible, but touches are not registered at all. Or it responds intermittently, only in the center, only at the bottom. A familiar picture. Before you panic, let's figure out what is happening and how serious it is.
Why the touchscreen stops working
There are several reasons, and far from all of them require glass replacement.
Software glitch
This happens after a firmware update or when the tablet has been running for several days without a reboot. The sensor is physically intact — the system just "lost" it. Rarely, but it happens.
Dirt, moisture, grease
The touchscreen works on a capacitive principle: it reads the difference in electrical potential between your finger and the glass. A grease film, wet hands, or a thick case with a poor fit disrupt this contact. This is not a breakdown — it's physics.
Damaged digitizer
A crack crossed the sensor layer — part of the screen stopped responding. It gets worse: there are no visible cracks, but the glass inside has delaminated from an impact. The Samsung Galaxy Tab A7 is especially finicky in this regard — its digitizer is glued weaker than desired, and after a drop, it peels off without cracking on the outside.
Ribbon cable issue
The ribbon cable is a thin, flexible strip between the sensor layer and the board. After a drop, disassembly, or simply from age, it can come loose from the connector or break. This is no longer just glass — this is work inside the casing.
Controller defect on the board
This is the rarest occurrence. The touchscreen controller on the motherboard has failed. Usually, this is accompanied by screen artifacts, spontaneous reboots, or severe heating.
What you can try yourself
- Restart the tablet. It sounds trivial, but it resolves a third of requests regarding a "dead" touchscreen.
- Wipe the screen with a dry cloth. Remove the case, take off the protective glass — especially if it bubbles at the edges or fits poorly.
- Charge above 20%. At a critically low charge, some tablets intentionally disable some of the sensor's functions.
- Check your hands — are they wet? A drop of water on the screen makes it go crazy, registering phantom touches across the entire field.
There was a case: a Lenovo Tab M10 was brought in that "does not respond at all." We wiped the screen, removed a budget protective glass with bubbles at the edges — everything worked. The owner left embarrassed. We don't get embarrassed: this happens to us about three times a week.
When you can't do without a master
If a reboot and cleaning didn't help, diagnostics are needed. Here are the signs that the problem is more serious:
- The screen responds only in one zone or does not respond at all after a drop
- Touches "drift" — the click goes to the side away from the finger
- The tablet opens something, scrolls, types by itself — phantom clicks
- The touchscreen works unstably: sometimes it works, sometimes it doesn't
Recently, a 9th-generation iPad was brought in — the owner dropped it on tile and assured us that "nothing broke, just a little crack." The touchscreen worked, but only in the upper half. The crack went right through the touch layer. Replacing the glass assembly with the digitizer cost about 3,500 rubles, and he picked it up the next day.
If the issue is with the ribbon cable or the controller, the price and turnaround time depend on the model. For popular tablets, spare parts are in stock. For rare devices, we sometimes wait up to a week — and we honestly warn you right away.
If nothing helped — come in
Diagnostics at iClub are free. The technician will look at the device and tell you straight: glass, ribbon cable, or something more serious. Without unnecessary words and imposed repairs. We are at Kommunisticheskaya, 35 — drop by.