WCD9326 Audio IC

Every smartphone routes its voice and playback audio through one codec chip that sits between the application processor and the speaker, earpiece, and microphone circuits. On a long list of Qualcomm Snapdragon 210, MSM8953, and APQ8009-based boards, that chip is the WCD9326. When a customer brings you a phone with no call audio, a dead earpiece, or a mic that stopped picking up voice after a drop or a liquid exposure, this IC is one of the first components you check on the board — right after you rule out software and connector faults.The WCD9326 is a stand-alone Hi-Fi audio codec, not a simple amplifier. It carries its own dedicated DSP for playback processing, handling Hi-Res audio at up to 192kHz and native 44.1kHz without leaning on the main application processor for decoding work. It talks to the host chipset over three possible paths — SLIMbus, I2S, and PDM — which is why you see it paired with MSM8953, PM8953, and APQ8009 platforms across multiple phone families rather than locked to one specific SoC. On the software side it also supports Qualcomm's Noise and Echo Cancellation stack and Sense Voice Activation (SVA), so calls stay clear even with background workshop noise.In your day-to-day repair workflow, this IC comes up in a few recurring scenarios. A phone with a "dead after flash" symptom on the audio side — where the display and network come back fine after a software marna but sound never returns — often points straight to this chip or its solder joints. So does a board where the earpiece stays silent during calls but the loudspeaker still works for media, since that split points to a codec-level fault rather than a driver or speaker problem. Boards that survived water damage and now show intermittent mic dropouts are another common candidate, since corrosion under a BGA package like this one breaks individual pins without killing the whole chip.Reballing and IC change karna on the WCD9326 calls for a proper hot air station with tight temperature control, a decent microscope for pad inspection, and fresh leaded solder paste — this is fine-pitch BGA work, not something you rush with a generic iron. Before you commit to swapping the chip, run continuity checks on the SLIMbus and PDM lines back to the main processor, because a cracked trace or a failed passive nearby produces the exact same "no audio" complaint and wastes your reballing time on a chip that was never the problem.Sourcing this part correctly matters more than most passives on the board. Counterfeit or relabeled audio codecs are common in the used-parts market, and a mismatched or fake WCD9326 either fails outright after reflow or introduces static, echo, or one-sided call audio that sends the phone right back to your bench. This listing is the original Qualcomm WCD9326, tested for use as a direct board-level replacement on the device families it supports.Stock this IC alongside your ISP pinout tools, eMMC programmers, and reballing kit — audio faults tied to this chip show up regularly enough on Xiaomi and Samsung boards that having a verified original on hand saves you a diagnosis-to-delivery delay when a customer is waiting on a "no sound" repair.