Short answer: most iPhone farms run on Wi-Fi. It is cheap, fast and simple, and a phone needs no SIM to post. SIM cards give each phone its own carrier connection, which is the main reason people use them, but they add a monthly plan per phone, data caps, signal problems indoors and SIM admin. A common middle ground is Wi-Fi plus one proxy per phone.
What actually differs
The question is really about connections. On Wi-Fi, every phone behind your router shares one public IP. With a SIM and Wi-Fi off, each phone uses its carrier's network and an address from the carrier's pool.
Neither choice changes how the automation behaves, and behavior matters more than the address. Automating these apps may breach their terms, and nobody can promise an account will never be restricted.
Side by side
| Wi-Fi | SIM per phone | Wi-Fi + proxy per phone | |
|---|---|---|---|
| Public IP | Shared by all phones | Carrier address per phone | Proxy address per phone |
| Monthly cost | Your broadband | One plan per phone | Broadband + proxy per phone |
| Data | Usually uncapped | Often capped; video eats it | Depends on the proxy plan |
| Speed indoors | Predictable near an access point | Varies with signal | Depends on the proxy |
| Admin | One network | Plans, top-ups, SIM swaps | Proxy list and assignment |
| Phone numbers | None needed | One per phone | None needed |
| Carrier lock matters | No | Yes | No |
Cost: do the math with your own numbers
We won't quote plan prices; they vary by country and change often. Use this with your own figures:
| Input | Example assumption |
|---|---|
| Phones | 8 |
| Data per phone per month | Assume 30 GB if phones warm up on video feeds daily |
| Plan with that allowance | Your carrier's price |
| Monthly SIM cost | 8 × plan price |
| Wi-Fi alternative | Existing broadband + 8 × proxy price, or nothing |
Measure real usage first: run one phone on Wi-Fi for a week and read your router's per-device usage stats before you buy data plans. Video feeds use far more data than posting.
Practical problems with SIMs on a rack
- Signal. A metal shelf in a back room is a poor place for reception. Weak signal means slow uploads and failed posts.
- Heat. A phone on a weak signal works harder, and farm phones already run warm — see cooling.
- Carrier locks. A used phone locked to one carrier won't take another carrier's SIM. See the used iPhone checklist.
- Account recovery. A SIM gives a phone number, which is handy for recovery codes, but only if you keep the plan active. Losing the number can lock you out — see account security.
- Wi-Fi must be off for traffic to go over cellular, so you lose the cheap connection.
When each makes sense
Wi-Fi alone — a handful of accounts, one location, the lowest cost and effort.
Wi-Fi plus a proxy per phone — many accounts on one connection, and you want each phone to have its own exit address without a plan per phone. See proxies per phone.
SIM per phone — you need each phone on its own carrier connection, you have good reception where the rack sits, and you've budgeted plans and data.
With Farmero
Farmero drives phones over USB, so the control link doesn't depend on Wi-Fi or cellular; the apps just need internet. Optional per-phone proxies are under Settings → Proxies. Network setup is in phone farm Wi-Fi and the Mac setup guide.
FAQ
Do phone farm iPhones need SIM cards?
No. They need an internet connection, and Wi-Fi provides it. Posting and warm-ups don't need a phone number.
Do SIM cards make accounts safer than Wi-Fi?
They give each phone a different address, which is one signal. Nobody can promise any setup keeps accounts from being restricted.
How much data does a farm phone use on cellular?
It depends on how much video it watches. Measure one phone on Wi-Fi for a week before buying plans.
Can I mix SIM and Wi-Fi phones on one rack?
Yes. Just record which is which in your inventory sheet so troubleshooting starts in the right place.