Sessions & rotation

Mobile sessions follow the same model as residential, with one key difference: sesstime can go up to 60 minutes (residential cap = 30). This matches how long a real mobile device typically holds the same carrier-assigned IP.

For the full session model, syntax, and best-practice patterns, see Residential sessions & rotation. The mobile-specific notes are below.

Mobile-specific behavior

60-minute cap

helo_s1a2b3c4d5e-type-mob-region-us-asn-6167-session-job1-sesstime-60

Specifying sesstime > 60 returns 400 + X-Helodata-Error-Code: sesstime-out-of-range.

Higher repinning rate

Mobile devices change cells, lose signal, or switch IPs at the carrier's discretion. Expect the X-Helodata-Session-Repinned: true header more often than on residential — plan for 5–15 % of long sessions to be repinned mid-flight.

Pair sessions with ASN

A session without ASN can drift between carriers if the chosen device drops and a different-carrier device picks up. Always combine session with asn when you need carrier consistency:

helo_s1a2b3c4d5e-type-mob-region-us-asn-6167-session-job1-sesstime-60

Rotation pattern for high-throughput mobile

Mobile pools are smaller; rotating per connection can exhaust a small filtered pool. A workable pattern:

• Open N sticky sessions, each pinned to one carrier
• Round-robin requests across them
• When a session returns more than 3 target errors in a row, mint a new session ID

import requests, random, string

BASE = "helo_s1a2b3c4d5e-type-mob-region-us-asn-6167"

def new_session():
    sid = "".join(random.choices(string.ascii_lowercase + string.digits, k=8))
    return f"{BASE}-session-{sid}-sesstime-30"

pool = [new_session() for _ in range(10)]

What sessions do not do (mobile-specific)

• They don't bypass carrier-side rate limits. Each mobile IP shares the carrier's per-IP quota — sticky sessions concentrate your traffic on one IP, which can trigger the carrier's throttling sooner. Spread across more sessions, not fewer.

Related

• ASN targeting — pair with sessions for carrier consistency
• Residential sessions & rotation — full model and code patterns