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eSIM Customer Support Playbook: Ready Answers for Resellers

Fully Signal Team Published 3 min read
Quick answer

Most eSIM support tickets come from five issues: installation, "no service" on arrival, slow data, running out of data and compatibility. Resellers can solve most of them with ready answers — turn on data roaming for the eSIM line, toggle airplane mode, check the eSIM is the mobile-data line, offer a top-up — and prevent them with clear pre-departure instructions.

In this article
  1. The five most common issues
  2. Copy-paste answers
  3. Prevent tickets before they happen
  4. Tools that help
  5. FAQ

Good support is what turns a one-time eSIM buyer into a repeat customer. The good news: almost every ticket is one of a handful of issues. Here are ready answers you can copy.

The five most common issues

IssueUsual causeFix
"I can't install it"No Wi-Fi, locked phone, scanned twiceConnect to Wi-Fi, check unlock, use the manual code
"No service" on arrivalData roaming off for the eSIM lineTurn on data roaming for the eSIM, toggle airplane mode
"Data doesn't work but I see signal"Mobile data still set to the home SIMSet the eSIM as the mobile-data line
"Very slow"Daily high-speed allowance used, weak areaCheck plan conditions, move location, restart
"I ran out of data"Plan used upOffer a top-up

Copy-paste answers

No service after landing

"Please go to Settings → Mobile Data (iPhone) or SIM manager (Android), select your travel eSIM, make sure the line is on and Data Roaming is on. Then turn airplane mode on for 10 seconds and off again. It can take a minute to connect."

Data not working with signal showing

"Your phone may still be using your home SIM for data. Go to Settings → Mobile Data → Mobile Data and select the travel eSIM line."

Can't install

"Please connect to Wi-Fi and open your install link on the phone you're travelling with — it offers a one-tap install. If that doesn't work, choose 'Enter details manually' and use the SM-DP+ address and activation code on the install page. Your phone must be carrier-unlocked."

Ran out of data

"You can add data to the same eSIM — no new QR code needed. Here's the top-up link: …"

Wants a refund

"We can refund eSIMs that haven't been installed. Once installed on a phone, an eSIM can't be returned to the network."

Refund rules · Top-ups · Installation guide

Prevent tickets before they happen

  1. Compatibility check at checkout — dial *#06# for an EID (compatible phones)
  2. Pre-departure email with the install link and the roaming switch
  3. Smart install page — the white-label install page on Fully Signal detects iPhone or Android, offers one-tap install and works in 8 languages
  4. Plan conditions in plain words, especially for unlimited plans (unlimited explained)

Tools that help

  • eSIM status and remaining data in the partner panel or GET /api/v1/esims/{iccid} — see at a glance whether the eSIM was installed and how much data is left
  • Webhooks for activation and expiry, to message customers proactively (webhooks)
  • Partner support tickets to escalate network issues to Fully Signal, with screenshots

FAQ

What's the most common eSIM problem?

"No service" on arrival, almost always because data roaming isn't switched on for the eSIM line.

Should I support customers 24/7?

Travellers are in different time zones, so fast responses matter. Clear self-help instructions cover most issues; escalate network problems to your supplier.

How do I check whether a customer installed their eSIM?

Check its status in the Fully Signal panel or via the API — it shows whether the eSIM is ready, installed or ended, and the remaining data.

Who handles network outages?

Escalate to your supplier. On Fully Signal, open a partner ticket from the panel and check the public status page.

#esim support#esim troubleshooting#customer service#esim reseller
Guide eSIM reseller program: sell eSIM data as your own Join a free eSIM reseller program: sell eSIM data in 210+ countries under your brand, set your own prices and keep the full margin. Panel and API. Read the guide
Fully Signal Team The Fully Signal team builds the white-label eSIM wholesale platform used by resellers, travel brands and apps to sell eSIM data in 210+ countries.

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