343S0694 U2402 Touch IC for iPhone 6 / 6 Plus – Touch Controller

When an iPhone 6 or iPhone 6 Plus comes into your shop with a completely dead touch screen, or a display that lights up but doesn't respond to any tap, the 343S0694 Touch IC at position U2402 is usually the first component you check. Technicians across Lahore, Karachi, and Islamabad know this chip by its nickname, "Meson," and it shows up constantly in board-level repair work on the iPhone 6 series. This IC acts as the bridge between the digitizer glass and the logic board's processor. It reads the electrical signals generated when a finger touches the screen and passes that data along so the phone can register taps, swipes, and gestures. When this chip fails, cracks, or loses its ball connections from board flexing or liquid exposure, the touch function drops out even though the display panel itself works fine. You'll see this most often after a phone has been dropped hard, exposed to moisture, or after a previous repair job disturbed the board near U2402. Common symptoms that point straight to this IC include a phone that boots normally and shows the lock screen but doesn't respond to touch input at all, intermittent touch response that comes and goes, or a screen that only registers touches in certain zones. Sometimes a customer will describe it simply as "touch nahi chal raha" or a "dead touch" phone, and once you've ruled out a bad digitizer flex or connector, this chip is the next logical suspect. Replacing the 343S0694 is board-level work, not a screen swap. You need a hot air rework station set to the right temperature profile, flux, a decent microscope or magnifier for aligning the 130 pins accurately, and a stencil for reballing if you're reworking rather than fitting a pre-balled replacement. Precision matters here because the pin pitch is tight, and a bridged joint or a cold joint after reflow will either brick the touch function entirely or leave it working intermittently, which just brings the customer back a second time. This chip is specific to the iPhone 6 and iPhone 6 Plus logic boards. It's not interchangeable with touch ICs from other iPhone generations, so double-check the board revision and the existing chip label before you order a batch for stock. Keeping a few of these on your bench means you're not waiting on a supplier every time an iPhone 6 touch fault walks through the door, which matters a lot when customers in Pakistan expect same-day turnaround on these older, high-volume devices. For repair shops doing consistent iPhone 6 series work, stocking this IC alongside your reballing platform and hot air station keeps your board-level repair queue moving without gaps. It pairs naturally with your existing eMMC and CPU reballing workflow tools, since the skill set and equipment overlap directly.