If you have trouble connecting your Pluslife device to our app (or staying connected), it is usually a hardware problem rather than an app problem.
This page lists common causes and their solutions.
The vast majority of connectivity issues are caused by inadequate USB power supplies.
Pluslife devices require a high-quality USB power supply (i.e. a USB charger). They are very susceptible to inadequate input power quality. The chips that control Bluetooth and USB are more sensitive than the rest of the device, which means that unstable power often first manifests as connectivity issues.
The manufacturer requires a 5V 3A (15W) rated power supply.
However, even if the rating is correct, there may still be problems due to unstable power output, especially with cheap phone chargers. Unlike a phone, the Pluslife device does not consume a steady amount of power, but its power demand fluctuates quickly whenever the heater is turned on and off to maintain precise temperature. Some cheap power supplies can't adjust to demand quickly enough, causing instability.
These Anker chargers (and similar ones) have been reported to work well:
If the lines on your reaction curves are very squiggly, it is usually a good idea to use a power bank rather than a wall power supply to isolate the device from grid interference:
USB-C ports on Macbooks and Macbook chargers are reported to work with an adapter. Other manufacturers are likely similar.
This list is not exhaustive - your mileage may vary, but many chargers will work. You can try using chargers you already have. There's some wiggle room regarding the power rating depending on the quality of the voltage converter, but definitely avoid using chargers with a rating less than 2.4A / 12W.
It is possible that a specific power supply worked before and then stops working. Even if a specific product worked at some point, first try using another one before continuing troubleshooting.
There was a batch of bad power supplies shipped by Pluslife around June/July 2024, which had unstable voltage regulation. Bluetooth and USB doesn't work at all or very unreliably with these batches.
If you were affected at the time, you should've received an email by your distributor. If you are an Altruan customer, you can use this link to get a replacement shipped. Note that it's an EU plug.
The affected charger (to the left) is almost identical to the good one, but can be distinguished by an extra "15W" text, which is absent on the working charger:
Bluetooth connections can be interrupted by nearby sources of interference, such as phones, smartwatches, screens, TVs, chargers and similar. This is especially common in office buildings or similar spaces with many wifi networks and phones.
Try moving to a different space to see if that solves the issue.
If you experience frequent interference, we recommend using a USB connection using a computer or laptop.
Sometimes, interference comes from the power grid. A power bank solves this by fully isolating the Pluslife device from the grid (see above).
Sometimes, specific brands of Bluetooth devices simply won't talk to each other due to hardware compatibility issues.
If a specific phone or computer can't connect to Pluslife devices, but others work, it may be a compatibility issue. There's nothing you can do about this - use another device and/or connect via USB.
Avoid surge protectors, extension cords and similar. Plug the power supply directly into an outlet, away from other devices.
Make sure you're using the correct cables. The "round plug" cable is for power, the USB-C cable plugs into a computer.
You cannot connect to a Pluslife device using your device's Bluetooth settings. Always connect directly through the app.
Pluslife devices can only be connected to one device at the time. While one device is connected, no other devices can connect at the same time, and it won't show up in the device picker. Make sure no other device is already connected to it by accident
When you connect the Pluslife device to a computer using USB, try to first connect the power cable, turn it on, and only then plug in the USB cable.
On Linux, make sure your users has correct permissions to access USB serial devices, typically accomplished by adding your user to the dialout group or similar. For Bluetooth, Chrome needs special flags.
If none of the above troubleshooting steps resolved your problem, your device may be defective. We recommend asking your distributor for a replacement. Make sure to describe your troubleshooting steps.