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This section exists for the minutes after you land and the data does not work — the tightest minutes of any trip, when a ride still has to be booked, the accommodation still has to be found, and the battery is not what it was. What helps in that moment is not a long technical explanation but a short, clear order of checks running from the most common cause to the least. That is how this page is written.

The good news is that nearly every symptom people meet comes from a handful of settings on the phone, not from a broken profile or a faulty plan. The three most commonly missed are switching the eSIM line on, setting that line as the data line, and turning on data roaming for it. Those three account for most of what reaches us, and each takes under a minute once you know where to tap.

The four checks to run first, every time

Before looking at any specific symptom, run these four in order every time. They cause the majority of cases and together take under two minutes. Jumping straight to something complicated without checking them is exactly how people lose an hour to a problem one tap would have fixed.

1. 1eSIM hattını açınOpen the SIM management screen and check the installed eSIM line is switched on. A profile that is installed but left off will not pick up any signal at all.
2. 2Set the eSIM as the mobile data lineA dual-line phone routes data through one line only. If it is still pointing at your home SIM, nothing runs through the plan you bought. Switch it to the eSIM line and turn off any automatic data switching option.
3. 3Turn on data roaming for the eSIM lineTravel plans run over a partner network at your destination, so the handset regards it as roaming. With that option off, data will not work even when everything else is right. Turn it on for the eSIM line only, and leave it off for your home line.
4. 4Toggle airplane mode onceSwitch airplane mode on for around fifteen seconds, then off. That forces the phone to rescan and register with the network from scratch, and signal usually appears within seconds afterwards.

Read the symptom correctly before acting

Symptoms that look similar point at different causes. A phone reporting no service is not the same as one showing full bars that will not open a web page: the first is about registering with a network, the second about how data is routed inside the handset. Separating the two at the start saves a lot of time.

İndikten sonra çekim yok

This is the most frequent symptom and rarely means a broken profile. A phone just out of airplane mode needs a moment to find and register with a local network, especially inside a terminal where a great many people are doing the same thing at once. Give it two or three minutes before starting to intervene.

If the time has passed and there is still nothing, go back through the four checks above in full — particularly switching the line on and enabling data roaming. If it still will not connect, try selecting a network by hand instead of leaving it on automatic, because the phone sometimes latches onto an operator your plan does not use.

Selecting a network manually

Manual network selection lives in the mobile network settings for the eSIM line; where it sits and what it is called vary by brand and OS version. After switching off automatic selection the phone takes a moment to list the networks it can see. Choose the partner network named on your plan page or in your order confirmation email.

If the chosen network does not connect, work down the list one at a time, allowing about a minute for each. Once you have been through them, set it back to automatic and restart the phone once. Leaving it pinned manually to the wrong network stops the handset from moving to a working one on its own.

Signal is present but there is no internet

This nearly always points at how data is routed inside the phone. The usual cause is that the handset is still using the home SIM for data even though the eSIM line is on and has signal. Set mobile data to the eSIM line and turn off any option that lets the phone switch data lines automatically, since that option can move it back on its own.

The other cause is an incorrect APN. The phone normally sets this by itself once the profile is active, but occasionally a value left over from another network stays behind. Compare it against whatever your order page specifies. If the order page names no APN, none needs setting by hand — and editing it yourself can break a connection that would otherwise work.

Stuck on 'Activating'

If you installed the profile before flying, as we suggest, seeing it sit on 'activating' while you are still at home is normal rather than a fault: there is no partner network to attach to until you arrive. The status changes by itself once you land and switch the line on at your destination.

If it is still stuck after arrival, wait two or three minutes and toggle airplane mode once. If nothing moves, restart the phone once. Restarting repeatedly adds nothing and costs time and battery. While you wait, confirm data roaming is enabled on that line.

Problems while scanning and installing

Most QR scanning trouble is purely physical. Raise the brightness of the screen showing the QR, enlarge the image, and hold the camera about a palm's width away. If you are trying to scan from the same screen you are installing on, use manual entry with the SM-DP+ address and activation code from your confirmation email instead.

An invalid-code message usually does not mean the code is wrong. It means the phone failed to reach the server that hands out the profile. Check you are on stable Wi-Fi, turn off any VPN, and switch off a battery-saver mode that may be blocking background downloads, then try once more.

If it says the QR has already been used, first check the phone's SIM list for that profile, because one profile belongs to one handset and cannot be scanned twice. What often happened is that the first attempt succeeded without you noticing. If the profile is genuinely nowhere on the device, contact us with your order number.

VPNs, battery savers and other filters

Software running in the background can make installation and connection fail without saying so plainly. VPNs are the most frequent culprit, followed by battery-saver modes that restrict background activity, and content-filtering or ad-blocking apps that change the phone's DNS settings.

The most direct test is turning them all off temporarily and trying once. If it then works, switch them back on one at a time to see which was responsible. Turning everything back on at once tells you nothing and usually brings the same symptom back the next day.

When it is not a fault at all

Some things reported as faults are the plan behaving exactly as intended. The most common is data running out sooner than expected, which stops or sharply slows the connection immediately. The other is a plan reaching the end of its stated number of days while data still remains. Both are visible on your order page.

How much data a day actually costs depends heavily on the person. Watching high-resolution video, uploading full-size photos and leaving a map open all day differ by several times over. If you are unsure what to buy for the next trip, the data calculator estimates from your own usage pattern.

Estimate how much data you need

If you deleted the profile by accident

Deleting a profile removes it from the chip in the handset rather than hiding it, so it usually cannot be restored yourself and the original QR will not scan again. The right move is to stop tapping anything further and contact us with your order number, so we can check with the supplier whether a replacement can be issued.

The answer depends on that plan's terms and the supplier's policy: some can be reissued, some cannot be reissued at all, and some carry a charge. We will tell you what we are actually told, rather than promising anything before it has been checked.

What not to do while troubleshooting

Handled the wrong way, a one-minute problem can turn into one with no way back. The list below is what we most often see make things worse. If you are not sure what the symptom even is, stop after the first four checks and write to us before going further.

• Do not delete the eSIM profile to 'try installing again' — the original QR usually cannot be reused
• Do not factory-reset the phone mid-trip; the profile goes with it
• Do not enter an APN found elsewhere when your order page does not specify one
• Do not restart over and over — once is enough, then let the phone re-register
• Do not switch on data roaming for your home SIM as a test — your own operator may charge for it
• Do not leave installation to travel day; if it can be done at home on Wi-Fi, do it there

Battery while running two lines

The eSIM profile itself does not add meaningfully to battery use, but keeping two lines active means maintaining connections to two networks, and hunting for signal in weak-coverage areas costs noticeably more power. A battery that empties fast during a full day out usually comes from those two together.

If you do not need your home number all the time, switch that line off during the day and turn it on only when an SMS or a bank OTP is due. That takes one full radio out of the picture, and on a day spent walking the difference in battery is usually obvious.

When to write to us

If you have run the first four checks, matched the symptom against the table, and turned off VPNs and battery savers without result, stop experimenting and write to us. Pressing on without new information rarely improves matters and risks a profile being deleted out of frustration.

What helps us answer quickly: the order number, the model name and OS version, the country and city you are in right now, a screenshot of the error or of the SIM management screen showing the line's status, and a list of what you have already tried. The fuller that is, the less back-and-forth it takes.

Reach us on LINE at https://lin.ee/skDPoNx (@esimonline), by email at esimonline.asia@gmail.com, or by phone at 089-942-0818 / 088-521-6848. We take messages around the clock, every day. Reply times depend on when you write in, so if you are stuck at an airport or moving on within a few hours, say so in the first message.

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