u/DaveInPhoenix1

Arrived in Toronto and have no idea how the phone disappeared from my pocket. I was there for 8 days, and it was turned on only a few hours later, per Google find my phone, but not since.

I was desperate for mapping in Toronto, I immediately bought a replacement. I cannot type on a tiny keyboard without a 50% error rate, so I only use it for mapping or web searching when in my car (using voice). Also reported it missing at the Airport (YYZ), lost and found. I went there at the end of the trip, and a nice lady showed me a few dozen lost phones, but none were mine.

Upon returning home to Phoenix, the T-Mobile account phone number was switched to my new OnePlus (bought at Best Buy in Toronto).

It has a password to open, and I locked it remotely. I think I also did the reset thing, but I'm not sure there is an X in that box.

Amazingly, about 14 days later (yesterday), I got a notice from Toronto airport lost and found, that it was found and it's being shipped to me via FedEx. Yes!

Wonder if anyone else has had this dreadful experience - but then glad not hacked as I did have it linked to lastpass (but with Master Password). If a bad guy took the SIM card out, I believe they might have been able to hack or clone it. I am greatly relieved that it appears to have been returned to the lost and found, and I assume it was not cloned or hacked.

I don't need two of them, so when it is wonderfully returned, I will try to sell the prior phone. It's the 13 with 16 GB/512 GB. I love the phone, coming from years of an LG-30 but hated to pay for 2 of them so anxious to sell when lost one is returned to me.

QUESTION: It is remotely locked - if anyone else has experience - what do I need to do so can sell and new buyer can set up. I assume a way to completely reset it so the buyer can set up new service, etc.

Also if it has not been turned on since I locked and I think device locked also if I can do anything not to have the device locked (since only when turn on)? It would be nice to see what apps I had on it since I did have quite a few, although rarely used. I have never played a game on anything!

I am a nerd that likes to plan ahead so asking here and maybe helpful if anyone else has this terrifying experience in losing a relatively new OnePlus 13 :(

LiFePO4 New ICAO Requirements for airline passengers were effective March 27, 2026

Bottom line:
Same as before: we can take two batteries over 100Wh but under 160Wh only as carry-on, and none larger. Airline approval still needed, and no exposed terminals - need to be taped or in protective pouches to prevent shorts.

While past reports show lax enforcement, new penalties and a crackdown on rules are due to increased battery fires and penalties for airlines if rules are not followed.

NEW: Airlines will not give last-minute approval at the gate. To get approval to carry batteries over 100Wh but under 160Wh, you must submit a written request to the airline along with your UN38.3 documentation 3 to 7 days before your flight. Carry a copy of the airline's written approval and your UN38.3 papers to the gate. Based on the process described, you may also need to present these documents to TSA or foreign security screeners.

More background and comments:
Even safer chemistries like LiFePO4 are subject to the same transport rules since all lithium batteries pose some fire risk in air travel.

UN38.3 Mandate: Reaffirmed that all lithium batteries carried by air must have passed UN38.3 testing, a global standard that verifies batteries can withstand the vibration, pressure changes, and temperature extremes of air travel without failure.

ICAO (International Civil Aviation Organization): Global Harmonization: Mandated that all member states adopt the UN38.3 testing requirement for lithium batteries, with no exceptions for consumer-grade devices.

Individual airlines may have stricter battery limits than the baseline. Always verify airline rules before travel.

If your battery is rejected or you have not met the pre-approval requirements, you will need to either surrender the battery, ship it to your destination via certified dangerous goods freight, or make alternate arrangements. Always verify airline-specific rules before travel, and carry UN38.3 documentation for 100–160Wh batteries.

Much of this is at https://jmbatteries.com; however, the citations at the end are not relevant.

I had to do a lot of research to find the source, which is already being used by some AI, which is how I first heard about it.

I believe the original source is ICAO Technical Instructions DOC 9284:

TECHNICAL INSTRUCTIONS FOR THE SAFE TRANSPORT OF DANGEROUS GOODS BY AIR REVISIONS INCORPORATED IN THE 2025-2026 EDITION

Notes:
I have confirmed on airlines I use, American, Air Canada and Porter (use for Toronto since now direct PHX-YYZ), have on-site permission for 100-160Wh, but only American includes permission required in the current rules. But airlines should update their websites to show new rules.

I have confirmed that Bioenno and Goldemate batteries are UN38.3 certified, but I need to find out how to obtain a copy of the certification.

I plan to use two Goldemate 12Ah 12v, which actually say 12.8v on the battery label, for a total of 153.6 Wh, which is under 160. I also have a 12Ah Bioenno and am comparing it, but others have praised the Goldemate at a much lower cost.

Dave WØJKT "Just Killing Time" since 1964. HF SSB Only. Extensive bio on QRZ

Remote locked but found after lost Question