Repair parts Oppo A78 4G

The Oppo A78 4G, with model code CPH2565, is the A78 variant launched in summer 2023. It features a 6.43" AMOLED screen, a Snapdragon 680 processor and 67 W SUPERVOOC charging. It shares its name with the A78 5G, but the two versions share very few parts, so the first thing to do is check the model code. In this category, you’ll find the complete screen, flex cable and a 5000 mAh battery for repairing your device.

CPH2565 vs CPH2483: the Oppo A78 4G and A78 5G don’t share a screen or battery

You can find the exact code under Settings > About phone, in the specifications section; the menu name may vary slightly depending on the ColorOS version. If the phone won’t turn on, check the front. The A78 4G has a front camera in a punch-hole and a fingerprint reader integrated into the screen, while the A78 5G has a larger panel and a fingerprint reader in the side button.

There’s another common issue: some spare parts listings group the CPH2565 and CPH2579 codes together. The latter belongs to the Oppo A38, which has a 6.56" LCD screen, so it isn’t a variant of the A78 4G. Before buying, check that your phone’s code matches the one listed for the spare part.

The Oppo A78 4G has an optical fingerprint reader under its AMOLED panel

As standard, the Oppo A78 4G features a 90 Hz FHD+ AMOLED panel protected by Gorilla Glass 5. The optical fingerprint reader detects your finger through the panel itself. For this reason, the replacement screen technology determines whether you can continue using fingerprint unlocking, making it the most important detail to check when choosing a screen.

There are two types of replacement screens available for the CPH2565:

• AMOLED or OLED panels: retain the self-emitting light required by the optical reader and therefore support the under-screen fingerprint reader. They are the more expensive option.
• INCELL or LCD panels: more affordable, but they usually don’t support the under-screen reader. You’ll be limited to facial recognition or PIN unlocking.

At present, the complete screen compatible with Oppo A78 4G is available in Premium quality. Its product listing shows the panel technology and whether it comes with a frame, two details worth checking if fingerprint unlocking is essential for you. A78 5G screens aren’t compatible, as the size, resolution and connector differ. Once installation is complete, register your fingerprints again so the sensor can adapt to the new panel.

BLPA07 is the original battery reference for the Oppo A78 4G (CPH2565)

Oppo specifies a battery with a typical capacity of 5000 mAh (4890 mAh rated capacity) for the A78 4G. This battery supports 67 W SUPERVOOC charging. The original part reference is BLPA07, with spare part number 621035000028. It’s integrated into the chassis, so it can’t be removed like older removable batteries.

This category includes the 5000 mAh BLP923 battery in Premium quality, listed in the catalogue under the Oppo A57s. Suppliers link the BLP923 reference to the A57 4G, A57s, A77 5G and A78 5G. These models share the same capacity, but their maximum charging power is lower. Before placing your order, check the code printed on your phone’s battery. If it says BLPA07, contact our team to check whether the dimensions and connector are equivalent, so you can be sure the part fits your CPH2565.

Oppo A78 4G: the mainboard and charging board are connected by a flex cable

On the Oppo A78 4G, the USB-C port is on a separate lower board. This board connects to the mainboard via a long flex cable. If charging, the bottom microphone or the antenna signal fails, the cause may be this connection rather than the mainboard. For a repair shop, replacing the flex cable is a much simpler repair than replacing the board.

The flex cable for Oppo A78 4G is available in Premium quality. Before buying it, compare the shape, length and connectors shown in the product listing with those of the part you’re replacing. This confirms that it’s the same cable, particularly as the A78 5G has a different internal layout.

Frequently asked questions about repairing the Oppo A78 4G (CPH2565)

Will an Oppo A78 5G screen fit the A78 4G?

No. The A78 5G has a 6.56" LCD screen with a resolution of 1612 × 720, while the 4G has a 6.43" AMOLED screen with a resolution of 2400 × 1080. The size, connector and fingerprint reader position differ, so always check for the CPH2565 code when choosing a replacement part.

Will the fingerprint reader still work after replacing the screen?

It depends on the technology used in the new panel. If it’s an AMOLED or OLED panel, the optical reader may continue to work through the screen. If it’s INCELL or LCD, the fingerprint reader will usually stop working. In any case, delete your old fingerprints and register them again.

What is the original battery reference for the A78 4G?

The original battery is the BLPA07: 5000 mAh typical capacity and 4890 mAh rated capacity. The BLP923 is for the A57s and A78 5G, which charge at a lower power. Check the label on your battery before making a decision.

A listing shows CPH2565 and CPH2579. Are these the same phone?

No. The CPH2579 is the Oppo A38, with a 6.56" LCD screen and a side-mounted fingerprint reader. If your phone shows CPH2565 in the settings, you need parts specifically for the A78 4G.