Your alarm should sound when your iPhone is on vibrate mode, regardless of whether the ringer is turned on or off. Here's how ...
Apple removed the volume bar from the iPhone's lock screen a few years ago, but you can bring it back to your device now.
Modern iPhones have built-in speakers that are sufficiently loud for most tasks. However, like everything else, iPhone speakers can lose their flair with time. Dull speakers can turn routine tasks ...