Oppo A31 Black Rear Back Panel Battery Door Replacement - Verified Fit

About this product

This replacement rear back panel is molded specifically for the Oppo A31, a 2020-release device measuring 162.4 x 75.4 x 8.2mm and weighing 169g, built with a plastic front and back set into a plastic frame. It replaces a cracked, scratched, or missing battery door while preserving the phone's original footprint so the handset still sits flush in trays and most cases afterward. The cutout is aligned to the triple 12MP + 2MP + 2MP rear camera array exactly as Oppo positioned it on the A31, alongside the flash, so no lens is blocked once the panel is seated. This is the Black finish, matched to the Mystery Black colorway Oppo sold alongside Fantasy White and Lively Blue at launch.

• Designed to fit the A31's 4230mAh internal battery compartment as its cover
• Camera cutout matches the 12MP + 2MP + 2MP triple-lens layout, not a single or dual-lens shape
• Sized to the phone's exact 162.4 x 75.4 x 8.2mm chassis, not a stretched universal shell
• Finished to sit alongside the plastic front/back, plastic-frame build Oppo used on this model

How it fits your Oppo A31

Because the A31 carries a plastic front/back shell over a plastic frame rather than glass or metal, the back door snaps and clips into place the same way the original panel did, without adhesive or sealing gaskets. The cutouts are positioned for the micro-USB charging port along the bottom edge and leave the volume rocker and power button on the sides completely reachable, so button feel through the frame is unaffected once the panel is fitted. At 169g and 8.2mm thick, the A31 is on the lighter, slimmer end for a 6.5-inch device, and this panel is cut to that exact thickness so it doesn't add bulk or throw off the phone's balance in hand. The front 6.5-inch IPS LCD display, protected by Corning Gorilla Glass 3, is untouched by this replacement since it only covers the rear housing; this panel plays no role in screen protection.

What you should know

This panel is compatible with the Oppo A31 only - it is not interchangeable with the Oppo A5 (2020), A9 (2020), or A15 series, which use different dimensions and camera layouts. It is a structural and cosmetic replacement for the back cover only: it restores the housing around the 4230mAh battery and rear camera, but it does not include a battery, camera module, charging flex, or any internal electronics, and it offers no impact or drop rating beyond what the original plastic back provided. Fitting this panel means opening the rear housing to access the battery compartment, which can affect the manufacturer's warranty on the device if it is still active, so if your A31 is under warranty, check terms before opening it. Because this job involves the battery bay, we recommend having it fitted by a professional phone repair technician rather than attempting it without disassembly experience, since incorrect handling near the 4230mAh cell carries real risk.

Buying with confidence

Dastyab.pk ships this Oppo A31 back panel across Pakistan and accepts returns within 7 days on unused, uninstalled items if the fit or finish isn't right for you. The listing is written against Oppo's published A31 specifications - 6.5-inch IPS LCD, 4230mAh battery, 162.4 x 75.4 x 8.2mm body, micro-USB charging - so what you see here matches the device you actually own, not a generic template.