To install IPA apps on iOS 9.3.5, you can use the Sideloadly Legacy iOS Kit
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I can provide a step-by-step guide tailored to your hardware. ipa apps ios 935
Because Apple stopped signing anything above 9.3.5 for these devices, users are permanently stuck on this firmware. This creates a specific demand for —sideloaded applications not available on the App Store—to extend the utility of these aging devices. To install IPA apps on iOS 9
The most reliable way to get working apps on this older firmware is through the section of the App Store. ipa apps ios 935