What's the worst thing about having to get a new cellphone when you can no longer use the one you had?

I never take my cell phone out anywhere with me. I leave it at home in the stand.
The other day I had to renew my driver's license and they had downloaded a QR code to my email so I had to take it with me so they could get the email.
When I got home my phone just had a gray screen and nothing else. I had to buy a new phone. I hate my new phone and want my old one back, but they couldn't fix it. 😒
What's the worst thing about having to get a new cellphone when you can no longer use the one you had?
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