Chrome on iPhone user agent string
Chrome for iOS runs on Apple's WebKit, so its string follows Safari's format with CriOS/ and the full Chrome version in place of Version/. Unlike Safari, it reports the device's real iOS version (27.0.1 in this example). Below is a sample user agent string and what each part means.
Mozilla/5.0 (iPhone; CPU iPhone OS 27_0_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/154.0.8037.55 Mobile/15E148 Safari/604.1
At a glance
| Browser | Chrome 154.0.8037.55 |
| Engine | WebKit 605.1.15 |
| Operating system | iOS 27.0.1 |
| Device | Phone |
String breakdown
| Fragment | Meaning |
|---|---|
Mozilla/5.0 | Historical compatibility token. Nearly every browser claims "Mozilla/5.0" so that old servers do not serve it broken pages. |
iPhone | iPhone. |
CPU iPhone OS 27_0_1 like Mac OS X | iPhone system token: iOS 27.0.1. Safari freezes this value (since iOS 26), but browsers and apps that build their own user agent, such as Chrome and WeChat, report the real iOS version here. |
AppleWebKit/605.1.15 | Frozen WebKit token: Safari has reported 605.1.15 for years, and browsers that copy Safari's format send the same value, whatever the real engine version. |
KHTML, like Gecko | Compatibility note: the engine descends from KHTML and behaves like Gecko. Kept for legacy browser sniffers. |
CriOS/154.0.8037.55 | Chrome for iOS, version 154.0.8037.55. On iOS every browser must use Apple's WebKit engine. |
Mobile/15E148 | Fixed build identifier: Safari and other iOS browsers and apps send Mobile/15E148 whatever the real iOS build. |
Safari/604.1 | Safari/WebKit build 604.1 — a compatibility token, not the Safari version. Chromium browsers send it too. |
Other forms of this user agent
Request desktop site
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/154 Version/11.1.1 Safari/605.1.15Use it in code
curl
curl -A "Mozilla/5.0 (iPhone; CPU iPhone OS 27_0_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/154.0.8037.55 Mobile/15E148 Safari/604.1" https://example.comPython (requests)
import requests
requests.get("https://example.com", headers={"User-Agent": "Mozilla/5.0 (iPhone; CPU iPhone OS 27_0_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/154.0.8037.55 Mobile/15E148 Safari/604.1"})Playwright (Node.js)
const context = await browser.newContext({ userAgent: "Mozilla/5.0 (iPhone; CPU iPhone OS 27_0_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/154.0.8037.55 Mobile/15E148 Safari/604.1" });Source: Chromium source: ios/web/common/user_agent.mm · checked September 2026