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A proxy gives an iPhone its own network identity so platforms don’t see several phones (and all their accounts) coming from one shared IP. The unit that matters is the iPhone: each phone gets one dedicated IP, and the accounts on that phone share it.

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Do you actually need a proxy?

Small setup → home network is fine

One iPhone with 1–2 accounts coming from your home IP looks completely normal: no proxy, nothing to configure. Just leave Warmr’s proxy list empty and run.

Scaling up → one IP per iPhone

Once you go past that (more accounts on a phone, or more than one phone), give each iPhone its own dedicated IP so they aren’t all stacked on your single home IP.
As soon as you run more than one iPhone, each one needs its own IP. Two iPhones sharing a single IP is the exact pattern proxies exist to avoid.
For Warmr, the best all-round choice is a dedicated ISP proxy over SOCKS5: high quality, and the most cost-effective for the bandwidth a phone actually uses. Here are the proxy types worth using:

ISP proxies (SOCKS5): recommended

The best balance for Warmr: a dedicated static IP from a real ISP, assigned to one iPhone only. High quality and cost-effective for the bandwidth used. Get them from a quality provider like IPRoyal or Bright Data.

4G mobile proxies

Traffic routes through a real mobile carrier network, which is the same path the phone would take on cellular data. The most faithful option, and the most expensive.

Residential proxies

A cheaper alternative. IPs are assigned to real home connections rather than a datacenter. Choose providers with large, frequently rotated pools.

SIM card per iPhone

Ideal for hardware racks. Each iPhone uses its own SIM for mobile data, a unique carrier IP with no third-party proxy service at all.
Why dedicated matters: a dedicated IP is used by one iPhone only, so your devices do not share an origin and you do not inherit whatever the previous users of a shared pool were doing. Shared and rotating pools give you neither.

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What to avoid

Steer clear of cheap shared pools, datacenter proxies, and free proxies. Their IPs are heavily reused and recycled, well known to posting history-and-safety systems, and one of the fastest ways to land in a reduced reach, no matter which brand sells them. Stick to dedicated ISP, residential, mobile, or SIM IPs.

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Always use the SOCKS5 type

Whatever provider you choose, use its SOCKS5 proxies, not HTTP, and not any other type. Warmr is built around SOCKS5, and it’s the type that routes each iPhone’s traffic reliably through Stash or Shadowrocket.
When you add a proxy in Warmr, set the type to SOCKS5. Most providers let you pick SOCKS5 when you create or export the proxy; if you’re given both a SOCKS5 and an HTTP endpoint, use the SOCKS5 one.

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Assign one proxy to each iPhone

Each iPhone gets its own dedicated proxy. On the iPhone, you use a proxy client app, Stash or Shadowrocket (both on the App Store), and Warmr routes that phone’s traffic through its assigned IP.
1

Add your SOCKS5 proxies in Warmr

Open the Proxy section in Warmr and paste in your provider’s SOCKS5 proxies (host, port, and credentials), with the type set to SOCKS5.
2

Pin one proxy to each iPhone

Assign a single proxy to each connected device, so every iPhone has its own dedicated IP. No two iPhones should share the same proxy.
3

Install Stash or Shadowrocket on the iPhone

Install whichever client you prefer from the App Store. Both work the same way with Warmr.
4

Import the config via QR

Warmr’s Proxy page shows a QR code (and a Copy URL option) for that device. In Stash or Shadowrocket, scan the QR to import the config, then turn the VPN toggle on.
Traffic leaves the iPhone directly to your proxy provider. The Mac is never on that path and never sees your account traffic. Keep the iPhone and Mac on the same wifi when you first import a config or add new servers.
Never assign the same proxy IP to more than one iPhone. One dedicated ISP proxy belongs to one iPhone. The accounts on that phone share its IP. It’s one IP per phone, not one per account. IP collisions across phones are one of the most common causes of account flags at scale.
Not sure which provider fits your regions and budget? Reach out at hi@warmr.so. We’ll point you in the right direction.