Your employer uses TeamTalk to send you safety notices, site rules, shift changes and anything else you need to know. You read them in the language you choose. It is free for you.
Your employer pays. It costs you nothing, and there is nothing to download from an app store.
Tap your name, then Language, and pick yours. Every notice, and every video caption, then arrives in it.
Some notices are must-reads. Read to the end, then tap Confirm. Your manager sees your name against it. That replaces signing the paper sheet.
See something unsafe? Tap Report, take a photo, say what and where, and send. Your manager gets it straight away, translated.
Your phone number. It is used to sign you in and for nothing else. It is not sold, and other workers never see it, unlike a group chat. When you leave, your account closes on your leaving date and your number is deleted.