Use the Control Center
What Control Center? The first iPhone has basic settings options, but there was no Control Center to bring up for a quick photo, AirPlane mode, turning off Bluetooth, and so on. You can forget about a Flashlight tool too, because the 1st-gen iPhone didn’t even have one – the camera wasn’t equipped with an LED flash at all, so it couldn’t double as a flashlight. Back in the old days, some people actually started selling “white screen” apps that could act as flashlights before Apple finally added the feature.