You don't have to use a smartphone. You can buy a flip phone, a $20 Android handset or even a Linux burner that handles SMS, takes photos and keeps your voicemail. Or you could use no phone at all.
Mobile data and maps will stay, if you trust a WWAN modem enough. Your messaging apps for work should be on a work device, not your personal phone.
And yes, using "no phone" is a perfectly amicable solution to the problem. I know, it sounds wild. You can still make it 24 hours without touching Instagram in 2025, I've checked myself.
