The screen is circular, which makes every portrait feel formally observed.
Oppo Bubble Review: The Phone Grew A Small Round Witness
Oppo's magnetic selfie screen is a tiny second display for rear-camera photos, but it behaves like a witness assigned to the phone.
By Dr. Veda Sill, Science and Technology Correspondent
MOBILE ACCESSORY DESK - Published June 26, 2026 at 1:18 PM CDT
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The Oppo Bubble is a small circular screen that attaches to the back of a phone so the rear cameras can be used for selfies. This is the practical explanation. The reviewer's explanation is that the phone has grown a small round witness and would now like every face to proceed on the record.
I understand the need. Rear cameras are usually better than front cameras, and humanity has spent years pointing expensive lenses away from itself like a society afraid of proper evidence. A tiny removable screen solves the framing problem. It also creates the new sensation that the back of the phone has acquired an employee.
The Bubble is simple in a way I admire: it shows the camera view, triggers the shutter, and can function as a remote. It does not ask for a new philosophy of computing. It asks whether your face is centered, whether your arm is tired, and whether everyone is comfortable with this level of documentation.
The circular screen is the key. A rectangle says photograph. A circle says peephole, medallion, small aquarium, or inspection window. Looking into it, I felt less like I was composing a selfie and more like I was checking whether a very tiny inspector had accepted my cheekbones.
The trouble is magnets. The Bubble is designed around magnetic attachment, while compatible Oppo phones still need cases or stick-on rings to hold it properly. This makes the accessory feel like a confident small object that arrived before the building was finished. I respect that. Many people have begun jobs under similar circumstances.
At its best, the Bubble makes phone photography easier and more playful. At its worst, it is a charming puck looking for a stronger wall. I would like every Android manufacturer to adopt proper magnetic alignment, not because standards are beautiful, but because the small round witness should not have to cling for its life during testimony.
Source note: The Verge reported on June 25, 2026, that Oppo's Bubble is a 7mm-thick, 27.5g magnetic second screen with a 1.73-inch circular OLED display, 550mAh battery, camera remote controls, and Oppo-only compatibility.
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