I have a colleague who refuses to provide his mobile number to the employer and argues if they want him to be contactable on a mobile he’s happy for that if they provide the phone.
Seems reasonable to me.
After all he’s not expected to use his own laptop or buy pens and paper for occasions where he might need them.
My current job pays part of our salary as an 'allowance'. It even appears on our payslip separately from the base salary though it's taxed and NId just like it. One of the things this allowance is supposedly for is a mobile phone.
Can't imagine it's the only company to do that.
The answer depends on the employer, their employment policies, and then also the employee's culpability. Speaking again for my employer and others that I've met, it is possible to go through a helpdesk process in that event. In your argument for a black/white binary, you are ignoring the role of reasonableness in considering the balance.
This reminds me of the one time I worked for a government quango and for over a month essentially did very little.
My on-boarding was disrupted as the department head had left the previous month and the new one wouldn't be installed, it turned out, for over six months after I arrived. Another person was temporarily nominally appointed, but she had her own department to run at the same time.
I received a phone and a laptop within about three days of starting. Not too bad I supposed.
An account so I could actually log in to said computer arrived at the end of week one. Hurrah!
Access to anything else took over a month to get as the helpdesk was anything but helpful. The were missing an approval from my direct line manager - a position that was unfilled.... It was shocking how senior it had to go to get the approvals.
My own access card to the building took 10 weeks. Prior to that, I'd been using a blank one they kept because issuance took so long. Not sure how secure that was.
The result? I spent most of the first month not doing much.
It wasn't a bad job, but change was glacial and spending one pence required approvals from multiple people in different offices.
Working in the private sector, as I do now, I really do miss government work in some ways (low stress/ low pressure/ low expectations) despite how frustrating and bewildering it felt at times.
As an aside, it also made me realise how difficult onboarding is when so many of your colleagues work from home some/ most of the time. I was there about a year before leaving and there were people in my team I never met in person.
My last employer was quite hot on separating out personal and company use of IT. When GDPR came in, that only reinforced its policies.
One thing I've found about GDPR is some places are super hot on it and some places just aren't.