2020-4-11 · Personal Hotspot not showing could be caused by a bug in the iOS, the operating system that runs on the iPhone. If that's the case, there may be an iOS update that will fix things for you. Luckily, iOS updates are free and easy to install.
There is an app that is undetectable. You have to jailbreak your phone(legal). Never update it(sucks). Find the app and pay for it one time(legal). Use it(illegal How to Use Instant Hotspot on iPhone and iPad - MacRumors 2020-7-13 · In iOS and iPadOS, Instant Hotspot refers to Apple's long-standing Personal Hotspot feature that lets you share the data connection on your iPhone or cellular iPad with other Apple devices. Personal Hotspot Not Working On iPhone — Here's a Fix
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To use Personal Hotspot on iPhone, the cellular data must be turned on, or the Personal Hotspot will be greyed out. If iPhone Personal Hotspot disappears from the main screen of Settings, you can tap Cellular to see if there is an option to enable hotspot in cellular screen. If yes, tap Personal Hotspot and turn it on.
Using Personal Hotspot turns your iPhone into a wireless router. And you’re iPhone with both transmit and receive data for all devices. This is an excellent feature if you have a large data plan, particularly as an alternative to using public WiFi hotspots, which are often full of cybersecurity vulnerabilities.