Mobile Browser Automation CAPTCHA Solving with CaptchaAI

Mobile browser automation encounters the same CAPTCHAs as desktop — reCAPTCHA checkboxes, Cloudflare challenges, image grids — but also faces mobile-specific quirks like responsive layouts, touch-only interactions, and different User-Agent fingerprints. CaptchaAI handles the solving regardless of the device context.

This tutorial covers two approaches: Selenium with Chrome for Android via ADB, and Playwright's mobile emulation on desktop.

Real-World Scenario

You are automating form submissions on a mobile-optimized website that serves reCAPTCHA v2. The site detects mobile User-Agents and renders a mobile-specific CAPTCHA layout. You need to solve the CAPTCHA and submit the form from a mobile browser context.

Approach 1: Playwright Mobile Emulation (Python)

Playwright's device emulation is the simplest way to automate mobile browsers with CAPTCHA solving — no physical device required:

# playwright_mobile_captcha.py
import asyncio
import httpx
from playwright.async_api import async_playwright

API_KEY = "YOUR_API_KEY"

async def solve_recaptcha(sitekey: str, pageurl: str) -> str:
    """Submit reCAPTCHA v2 to CaptchaAI and poll for result."""
    async with httpx.AsyncClient(timeout=180) as client:
        # Submit task
        resp = await client.get(
            "https://ocr.captchaai.com/in.php",
            params={
                "key": API_KEY,
                "method": "userrecaptcha",
                "googlekey": sitekey,
                "pageurl": pageurl,
                "json": "1",
            },
        )
        result = resp.json()
        if result["status"] != 1:
            raise Exception(f"Submit failed: {result['request']}")

        task_id = result["request"]

        # Poll for result
        for _ in range(30):
            await asyncio.sleep(5)
            poll = await client.get(
                "https://ocr.captchaai.com/res.php",
                params={
                    "key": API_KEY,
                    "action": "get",
                    "id": task_id,
                    "json": "1",
                },
            )
            poll_result = poll.json()
            if poll_result["status"] == 1:
                return poll_result["request"]
            if poll_result["request"] != "CAPCHA_NOT_READY":
                raise Exception(f"Solve failed: {poll_result['request']}")

        raise Exception("Polling timeout")

async def main():
    async with async_playwright() as p:
        # Launch with iPhone 13 emulation
        iphone = p.devices["iPhone 13"]
        browser = await p.chromium.launch(headless=False)
        context = await browser.new_context(**iphone)
        page = await context.new_page()

        await page.goto("https://example.com/mobile-form")
        await page.wait_for_selector(".g-recaptcha", timeout=10000)

        # Extract sitekey
        sitekey = await page.get_attribute(".g-recaptcha", "data-sitekey")
        pageurl = page.url
        print(f"Found sitekey: {sitekey}")

        # Solve via CaptchaAI
        token = await solve_recaptcha(sitekey, pageurl)
        print(f"Token received: {token[:50]}...")

        # Inject token
        await page.evaluate(f"""
            document.getElementById('g-recaptcha-response').value = '{token}';
            document.getElementById('g-recaptcha-response').style.display = '';
        """)

        # Trigger callback if it exists
        await page.evaluate(f"""
            try {{
                const clients = ___grecaptcha_cfg.clients;
                Object.keys(clients).forEach(k => {{
                    Object.keys(clients[k]).forEach(j => {{
                        if (clients[k][j] && clients[k][j].callback) {{
                            clients[k][j].callback('{token}');
                        }}
                    }});
                }});
            }} catch(e) {{}}
        """)

        # Submit form
        await page.click('button[type="submit"]')
        await page.wait_for_load_state("networkidle")
        print("Form submitted successfully")

        await browser.close()

asyncio.run(main())

Approach 2: Selenium with Mobile Emulation (JavaScript)

Use Selenium with Chrome DevTools Protocol mobile emulation for Node.js workflows:

// selenium_mobile_captcha.js
const { Builder, By, until } = require('selenium-webdriver');
const chrome = require('selenium-webdriver/chrome');
const axios = require('axios');

const API_KEY = 'YOUR_API_KEY';

async function solveCaptcha(sitekey, pageurl) {
  // Submit task
  const submitResp = await axios.get('https://ocr.captchaai.com/in.php', {
    params: {
      key: API_KEY,
      method: 'userrecaptcha',
      googlekey: sitekey,
      pageurl: pageurl,
      json: '1',
    },
  });

  if (submitResp.data.status !== 1) {
    throw new Error(`Submit failed: ${submitResp.data.request}`);
  }

  const taskId = submitResp.data.request;

  // Poll for result
  for (let i = 0; i < 30; i++) {
    await new Promise((r) => setTimeout(r, 5000));
    const pollResp = await axios.get('https://ocr.captchaai.com/res.php', {
      params: { key: API_KEY, action: 'get', id: taskId, json: '1' },
    });

    if (pollResp.data.status === 1) return pollResp.data.request;
    if (pollResp.data.request !== 'CAPCHA_NOT_READY') {
      throw new Error(`Solve failed: ${pollResp.data.request}`);
    }
  }
  throw new Error('Polling timeout');
}

async function main() {
  // Configure mobile emulation
  const mobileEmulation = {
    deviceMetrics: { width: 390, height: 844, pixelRatio: 3.0 },
    userAgent:
      'Mozilla/5.0 (iPhone; CPU iPhone OS 16_0 like Mac OS X) ' +
      'AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.0 Mobile/15E148 Safari/604.1',
  };

  const options = new chrome.Options();
  options.setMobileEmulation(mobileEmulation);

  const driver = await new Builder()
    .forBrowser('chrome')
    .setChromeOptions(options)
    .build();

  try {
    await driver.get('https://example.com/mobile-form');
    await driver.wait(until.elementLocated(By.css('.g-recaptcha')), 10000);

    // Extract sitekey
    const captchaEl = await driver.findElement(By.css('.g-recaptcha'));
    const sitekey = await captchaEl.getAttribute('data-sitekey');
    const pageurl = await driver.getCurrentUrl();

    console.log(`Sitekey: ${sitekey}`);

    // Solve CAPTCHA
    const token = await solveCaptcha(sitekey, pageurl);
    console.log(`Token: ${token.substring(0, 50)}...`);

    // Inject token
    await driver.executeScript(`
      document.getElementById('g-recaptcha-response').value = arguments[0];
    `, token);

    // Submit form
    await driver.findElement(By.css('button[type="submit"]')).click();
    console.log('Form submitted');
  } finally {
    await driver.quit();
  }
}

main().catch(console.error);

Mobile-Specific Considerations

Troubleshooting

FAQ

Should I use real mobile devices or emulation?

Emulation is faster for development and CI/CD. Real devices via Appium or ADB are better for production scenarios where fingerprinting matters.

Does CaptchaAI need to know it's a mobile CAPTCHA?

No. CaptchaAI solves based on the sitekey and page URL. Mobile vs desktop distinction doesn't affect the solving process.

Can I combine mobile emulation with a proxy?

Yes. Both Playwright and Selenium support proxy configuration alongside mobile emulation. Pass the proxy to CaptchaAI as well for consistency.

Related Articles

• How To Solve Recaptcha V2 Callback Using Api
• Zapier Captchaai No Code Automation
• Recaptcha V2 Turnstile Same Site Handling

Next Steps

Start automating mobile CAPTCHA flows — get your CaptchaAI API key and integrate with your mobile automation stack.

Related guides:

• CAPTCHA Handling in Mobile App Automation with Appium
• React Native WebView CAPTCHA Solving
• Extracting reCAPTCHA Parameters from Page Source