Running Facebook ad accounts on a mobile proxy
Meta ties ad accounts together through the device, the payment method, and the network. A dedicated mobile line helps the network layer and keeps one Business Manager on one stable address, but it does not rescue shared cards or reused assets.
A dedicated mobile line gives one Business Manager a stable, trusted address, which removes one of the signals Meta reads. It does not undo the others. If two ad accounts share a card or identical creative, the line will not separate them.
How Meta links ad accounts
Meta reads four things: the device fingerprint, the payment method, the network, and the ad assets. Any one shared across accounts can connect them, and enforcement can then travel from one account to the rest.
The payment method is the strongest link and the hardest to split. The network is the easiest to isolate, which is where a proxy fits.
Where a dedicated mobile line fits
One Business Manager, one dedicated line, one stable mobile IP. Meta expects ad management from ordinary connections, and a carrier IP looks ordinary. The address stays put, so the account does not appear to move between sessions. The Facebook proxy page covers the same setup for one BM.
Ranges shared with thousands of real phones are treated more gently than datacenter IPs, because blocking them would affect real users. See why your proxy gets blocked.
What a proxy cannot fix
A shared card, duplicated creative, or the same verified domain across accounts will still link them. A proxy is the network layer only. Treat it as one part of a clean setup, not a cure.
One modem per profile
If two Business Managers must stay separate, give each its own line. Sharing one IP across both recreates the link you are trying to avoid. Dedicated mobile plans on this service are one modem per customer, with extra lines on request, as listed in dedicated mobile proxy plans.
Warm up and expect review
A fresh profile that logs straight into Ads Manager is unusual. Log in daily, use the account like a person, and expect a review period. A mobile line lowers friction; it does not skip the review. Meta's advertiser verification is a separate paperwork step.
Does a mobile proxy stop ad account bans?
No. It isolates the network signal. Shared cards, duplicated assets, and policy issues can still get accounts disabled. Use it as one layer, not a guarantee.
Can several ad accounts share one mobile line?
Technically yes, but it links them by IP. If they must stay separate, give each its own line.
Should the IP rotate?
No. Keep one stable address per Business Manager. Rotating the IP mid-session looks like a move.
Do I still need browser isolation?
Yes. Meta reads the device fingerprint too, so pair the line with isolated browser profiles.