Annual Defect Report
MobotAnnual Defect Report 2026What real mobile bugs look like
A year of Mobot testing (Q3 2025 – Q2 2026) produced 6,372 unique defects across 83 mobile apps in 11 industries. Here's what the platform actually catches — and where the traps are hiding in your vertical.
Inside the report
Where mobile apps actually break
The five that find everyone
Broken navigation, missing or blank content, login and authentication failures, payment issues, and crashes account for 57% of every defect Mobot surfaced.
Industry signatures
Every vertical has a signature bug type that runs 1.4× to 3.8× more common than the cross-industry baseline — Social/Dating notifications at 3.8×, Travel/Outdoor location at 3.7×.
Deviation from baseline
Which categories over- or under-index for each industry, sorted by uplift multiple, so you know where to point coverage first.
Platform patterns
Whether defect classes favor iOS or Android — and what it means for the device matrix you actually need.
Why this data is different
Every data point is a verified defect on a physical device
Most industry reports survey teams about the bugs they think they have. This one counts the bugs Mobot's robots actually found — on real iOS and Android hardware, in push, Bluetooth, biometrics, camera, and network flows — each reviewed by a QA analyst before it was counted.
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Earlier research
Where this report comes from
Feature pass/fail patterns. Mobot’s earlier Mobile Pass/Fail Feature Report looked at which feature classes fail most often on real devices: camera, payments, biometrics, push, deep links, Bluetooth and backgrounding. These fail in ways that only appear on real hardware, and they are the features users notice first when they break. The Annual Defect Report carries that feature-level view forward.
The state of mobile app testing. Most mobile teams run a patchwork: unit tests in CI, a scripted UI suite on emulators or a device cloud, and a manual pass before release. Each layer is reasonable on its own. Together they leave the same gap, the hardware-dependent scenarios that reach production broken. That is the gap this report measures.
Trusted by Leading Mobile Teams
Data drawn from testing for teams like those above. Want your own app benchmarked against the report? Or start a free trial →
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