You said:

Does Rossmann Repair Group repair iPhone screens and batteries, or only recover data? What should I do before sending a phone?

ChatGPT said:

Rossmann Repair Group is not just a data-recovery shop, but there’s an important distinction:

They do iPhone board-level repair/microsoldering, particularly when the phone is dead, water-damaged, not charging, or not detected by a computer. Their iPhone service is primarily aimed at getting the original phone working long enough to recover the data. 
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Rossmann Repair Group

I wouldn’t assume they are a general iPhone repair shop for routine screen or battery replacement. Their current site describes their scope as “data recovery and board-level repair,” rather than ordinary module-level repairs such as replacing a cracked display or worn battery. 
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Rossmann Repair Group

If your goal is simply “replace my cracked screen” or “replace my battery,” I'd contact them first and ask whether they currently accept that particular repair rather than mailing it in under the data-recovery service.

Before you send an iPhone for data recovery

Do not reset or erase it. If the data matters, preserving the original device and its encryption state is critical.

Know the passcode. Rossmann says the passcode is required to decrypt the data once they restore the phone's ability to boot. They cannot bypass it. 
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Rossmann Repair Group

If it's water-damaged and still works, back it up immediately if you safely can. If it is already dead after liquid exposure, Rossmann specifically advises against repeatedly powering it on or charging it. 
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Rossmann Repair Group

Create the service ticket before shipping. Their current mail-in instructions say to include the device, your name and ticket number, the passcode if locked, and your return address. 
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Rossmann Repair Group

Don't send unnecessary accessories. Their instructions say not to send chargers/cables, retail boxes, or protective cases. 
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Rossmann Repair Group

Use tracking and signature confirmation for the shipment. Rossmann specifically recommends this. 
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Rossmann Repair Group

Back up anything you can before shipping. If the phone is functional, an encrypted computer backup or iCloud backup gives you an additional safety net.

One other thing worth noting: Rossmann's current iPhone data-recovery page says its service is $500 for iPhone 8 and older and $750 for iPhone X and newer, with a free evaluation and no recovery fee if they can't recover the data. 
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Rossmann Repair Group

Rossmann's iPhone data-recovery service

If you tell me what's wrong with your iPhone (e.g. cracked screen, bad battery, won't turn on, water damage) and the model, I can tell you whether Rossmann's service appears to fit that situation.

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