1616A0 iPhone 13 Series U2

Charging faults on iPhone 13 boards rarely stay simple. You plug in the cable, nothing happens, or the phone charges only when you jiggle the connector, and that's usually where the 1616A0 comes into the picture. This chip sits at U9300 on the board and works as the USB Tristar controller, meaning it manages how the phone talks to whatever charger or cable gets plugged in. When it degrades — from moisture, a static discharge, or just normal component fatigue — the phone can't recognize the charger at all, or it recognizes it inconsistently.You'll usually get to this IC after ruling out the charging port itself. If you've already replaced the port, cleaned the connector, and checked the flex cable, and the phone still won't take a charge, the 1616A0 is next. Reflow first if you're not 100% sure it's dead — sometimes a reheat with hot air fixes a cracked solder joint underneath without a full IC change. If reflow doesn't hold, IC change karna is the move: remove the old chip, clean the pads properly, and reball before placing the new 1616A0.This is a BGA package, so you're working with hot air and either reballing wire/paste or a preformed stencil, not a soldering iron. Board temperature control matters here — overheating pulls up neighboring components on a densely packed board like the 13 series, and underheating leaves cold joints that fail again in a week. Technicians replacing this chip regularly keep station temperature consistent and use flux generously to protect surrounding parts during removal.Because this chip is tied so closely to the charging port and PMIC, it's worth checking the full path before blaming the IC outright. A dead-after-flash situation or a phone that shows charging icon but doesn't actually top up the battery can sometimes trace back to firmware rather than hardware — worth a software check before you commit to a chip swap. But for the classic no-power-detected, no-charging-icon, or charge-only-at-certain-angles complaints, this IC replacement is the standard fix in most repair shops.Sourcing quality matters more than people expect with these small ICs. A counterfeit or reused chip pulled from a donor board without proper testing can fail again within days, sending the same phone back to your bench. Original or tested-good stock keeps your repair from becoming a repeat job, which matters for shop reputation and warranty claims alike.Stock a few of these if you're running an active repair bench — charging complaints are one of the most common walk-in issues for the 13 series, and having the IC on hand means you're not waiting on parts while a customer's phone sits idle.