GRPS Tracker
Posted: Sat Nov 30, 2019 2:36 am
It's not a GPS tracker, all it can do is very roughly estimate its distance to proximal cell towers and calculate the geometry. It's usually off by as much as 500 metre/yards so you can't use it for navigation.
The GF-07 box is an inch and a half along the longest axis, weighs an ounce, clings to any metal surface by using an internal magnet, and it's absolutely slated by every review out there on the web. There's two reasons for that.
Three reasons. Or maybe four, we'll see. The imprecise location is one.
It requires a SIM and a micro-SD card to accumulate time-and-place pairs for mapping. That's the second reason, either "it didn't come with a SIM" or "I had to buy a micro-SD card". This thing is sold worldwide, I've no idea how anyone thinks a SIM is packaged with it and SIMs are free where I live anyway. A 4 or 8 GB micro-SD card is the price of a small bar of chocolate.
So to the third reason. SIMs often arrive with a SIM lock code which needs a PIN each time you power it up. There's no numeric pad on the GF-07 and it's intended for remote use anyway. Clearly you have to put your SIM into a phone, activate it, write down the phone number, remove all the security and then transfer it into the device, it's how things work.
You SMS codes in the format nnn and it sends a reply confirming it's actioned the command. If you get a response then you activated the SIM correctly, if you don't then repeat the previous step less wrongly, you'll get there in the end.
So, what will it do. It lets you remotely turn on the microphone and listen/record from the device. It lets you talk and be heard, allegedly - I've not tried that. You can ask where it is on the planet and narrow it down to a quarter mile. You can get it to SMS you every time it's picked up or moved in any way, and send you a recording whenever it hears any sounds. It runs for a week on one charge. It does actually do all of these things and it costs £4 delivered.
How it ever gets even one bad review I have no idea. If I want the correct location on a 5 metre grid then I expect to pay more, not least for a larger battery. There are devices with better precision and longer battery life, but not for £4.
People are just strange.
The GF-07 box is an inch and a half along the longest axis, weighs an ounce, clings to any metal surface by using an internal magnet, and it's absolutely slated by every review out there on the web. There's two reasons for that.
Three reasons. Or maybe four, we'll see. The imprecise location is one.
It requires a SIM and a micro-SD card to accumulate time-and-place pairs for mapping. That's the second reason, either "it didn't come with a SIM" or "I had to buy a micro-SD card". This thing is sold worldwide, I've no idea how anyone thinks a SIM is packaged with it and SIMs are free where I live anyway. A 4 or 8 GB micro-SD card is the price of a small bar of chocolate.
So to the third reason. SIMs often arrive with a SIM lock code which needs a PIN each time you power it up. There's no numeric pad on the GF-07 and it's intended for remote use anyway. Clearly you have to put your SIM into a phone, activate it, write down the phone number, remove all the security and then transfer it into the device, it's how things work.
You SMS codes in the format nnn and it sends a reply confirming it's actioned the command. If you get a response then you activated the SIM correctly, if you don't then repeat the previous step less wrongly, you'll get there in the end.
So, what will it do. It lets you remotely turn on the microphone and listen/record from the device. It lets you talk and be heard, allegedly - I've not tried that. You can ask where it is on the planet and narrow it down to a quarter mile. You can get it to SMS you every time it's picked up or moved in any way, and send you a recording whenever it hears any sounds. It runs for a week on one charge. It does actually do all of these things and it costs £4 delivered.
How it ever gets even one bad review I have no idea. If I want the correct location on a 5 metre grid then I expect to pay more, not least for a larger battery. There are devices with better precision and longer battery life, but not for £4.
People are just strange.