How to insert a SIM card
About 5 minutes · Insert the SIM before boarding or after landing, then turn on roaming
Prepare 3 things
- Turn off phone before removing or inserting a SIM every time
- Insert the SIM ejector pin into the small hole on the right side of the phone and press gently until the tray pops out
- Remove your Thai SIM Keep it in the SAMURAI envelope (Put it back when you return to Thailand)
- place the SAMURAI SIM Cut corner matches the tray gold contacts facing down, then push the tray all the way back in
- Turn on phone If asked for a SIM PIN, check the SIM envelope
On arrival at your destination
- After landing, go to Settings › Cellular › Cellular data options
- Open Data Roaming
- Turn off Wi-Fi, wait 1–3 minutes until the destination network name shows on screen = Valid
- Turn off phone before removing or inserting a SIM every time
- Insert the SIM ejector pin into the small hole on the top or left side of the phone and press gently until the tray pops out
- Remove your Thai SIM Keep it in the SAMURAI envelope (Put it back when you return to Thailand)
- place the SAMURAI SIM Cut corner matches the tray gold contacts facing down, then push the tray all the way back in
- Turn on phone If asked for a SIM PIN, check the SIM envelope
On arrival at your destination
- After landing, go to Settings › Connection › Mobile network
- Open Data Roaming (Dual SIM phone: SIM manager › Mobile data Select SAMURAI)
- Turn off Wi-Fi and wait 1–3 minutes; if still nothing, turn airplane mode off and on
- Turn off phone before removing or inserting a SIM every time
- Insert the SIM ejector pin into the small hole on the side of the phone (on some models it’s on the top or bottom) and press gently until the tray pops out
- Remove your Thai SIM Keep it in the SAMURAI envelope (Put it back when you return to Thailand)
- place the SAMURAI SIM Cut corner matches the tray gold contacts facing down, then push the tray all the way back in
- Turn on phone If asked for a SIM PIN, check the SIM envelope
On arrival at your destination
- After landing, go to Settings › SIM cards and mobile networks
- Select the SAMURAI SIM and turn on Data Roaming and set it as the SIM for Mobile data
- Turn off Wi-Fi and wait 1–3 minutes; if still nothing, turn airplane mode off and on
Having trouble?
No signal after inserting the SIM
Check that data roaming is on · toggle airplane mode off and on · still not working? Use Troubleshooting helper
Network name shows, but no internet
Mostly related to APN · Find your pack’s APN then follow the 3 steps
Phone shows "No SIM" / "SIM Invalid"
Turn off the phone and reinsert the new SIM correctly in the slot · If it still shows the same, your phone may be carrier-locked — message us on LINE with your phone model
Can a dual-SIM phone use it alongside a Thai SIM?
Yes. Insert SAMURAI in the other slot, set SAMURAI as the mobile data SIM, andTurn off roaming on your Thai SIM to avoid roaming charges from your Thai carrier
Can I insert the SIM before boarding
Yes. Keep airplane mode on, then turn it off after landing — your phone will pick up the destination network by itself
No SIM ejector pin
Use a straightened paper clip or ask at the hotel front desk. Don’t use a toothpick (it can snap off in the hole)