The Google Pixel Tag is a small, dependable Android tracker, slim and lightweight. Its battery lasts around a year, but even when it finally runs out, replacing it is very straightforward.
The Pixel Tag uses a CR2032 coin cell battery. These batteries are inexpensive and widely available, and they power many watches and other trackers. It is worth picking up a few spares.
The Pixel Tag's smooth, rounded shape makes it prone to slipping from your grip. Trying to open it with one hand can easily send the back plate flying. It is best to hold the tag firmly in one hand, with your thumb resting on the base or the middle frame to keep it steady. Then, using the thumb of your other hand, turn the back plate anticlockwise.
Keep steady pressure on it as you turn. Because the factory seal is tight, the first opening is usually the hardest. Once the back plate loosens, the old battery should come out easily. After that first time, future replacements become much simpler.
Place the new CR2032 battery in, making sure it lies flat in the compartment and is facing the correct way. Then turn the back plate back into position until it is fully seated and closed.
Once everything is back together, open the Find Hub app on your phone. The tag should reconnect. If it still does not appear, open the tag again, refit the battery so that it sits completely snug, and close the back plate firmly. Even with the original battery, reassembly can sometimes knock it out of position.
Once you have mastered the two-handed twist, replacing the Pixel Tag's battery is very simple. A few careful seconds of turning, and your tracker is ready to carry on finding your keys, your bags, and anything else you have attached it to.
You had just settled comfortably into the couch. The Wi-Fi signal looked fine, and the video started playing, but then the picture suddenly froze. You glanced at the status bar. The Wi-Fi icon was gone, and your phone had quietly switched over to cellular data. A minute later, it switched back.
Modern phones are designed to constantly look for the best connection. That sounds thoughtful, until it quietly eats into your data plan or interrupts your calls and downloads.
Your phone continuously monitors four aspects of the current Wi-Fi network: signal strength, actual coverage, real throughput, and latency plus packet loss. If any one of these falls below an internal threshold, the phone decides the Wi-Fi isn't reliable enough and hands the traffic over to cellular data.
The most common trigger is a weak signal, usually caused by too much distance, walls in the way, or interference on the same frequency. The 5 GHz and 6 GHz bands are faster, but they cover shorter distances and weaken more noticeably after passing through walls, so spots deeper inside your home are more likely to trigger a switch.
Another scenario is Wi-Fi showing full bars but no actual internet access. This can happen when the router malfunctions, the carrier has a service outage, a login page requires authentication, or the network itself is congested. When the phone detects that data isn't flowing, it will switch on its own.
Phones also come with built-in assistive features that automatically enable cellular data when Wi-Fi slows down. On the iPhone, this feature is called Wi-Fi Assist, and in newer versions of iOS it has been renamed Connectivity Assist. Android devices typically use names like Smart Wi-Fi, Adaptive Connectivity, or Switch to Mobile Data.
With a mesh network, brief switches can also occur when the phone roams between access points or changes frequency bands. On top of that, when the screen is locked or the device is idle, power-saving rules sometimes disconnect Wi-Fi on purpose.
In short, your phone means well by trying to keep you online at all times, but side effects come with it, such as increased data usage, faster battery drain from two wireless radios working at once, and apps occasionally stuttering during the switch.
Automatic switching is an adaptive feature, and in most cases it needs no intervention from you, unless it starts creating the very problems it was meant to avoid. If you have plenty of data or an unlimited plan, leaving it on is perfectly fine.
If your Wi-Fi signal really is poor, a better long-term fix is to improve coverage, for example by adding mesh nodes, repositioning your router, or switching to the 2.4 GHz band, which reaches farther. If you simply want your phone to stay on Wi-Fi, turning off the assistive feature is the most direct solution.
On an iPhone, go to Settings, tap Cellular, find Wi-Fi Assist, and turn it off. In newer versions of iOS, this option has been renamed Connectivity Assist and moved to the Wi-Fi page in Settings. It's also a good idea to open the details page of the network you're currently connected to and check whether Low Data Mode is on. If it is, turn it off, because that mode can force a network switch when the screen is locked.
On Android devices, menu locations vary by brand.
Once it's turned off, your phone will stay on Wi-Fi and only switch when the connection drops completely.
If the switching keeps happening, try forgetting the current network and reconnecting. This clears out some outdated configurations.
If the signal is weak in certain parts of your home, prioritize the 2.4 GHz band for your phone and only use 5 GHz or 6 GHz when you're close to the router. Basic steps like restarting your router and phone, and updating the router's firmware, are also worth doing.
Android users can additionally set downloads and backups for individual apps to Wi-Fi only, which further reduces data usage. If you want to verify whether the problem lies on the cellular data side, you can temporarily turn off mobile data entirely and see whether Wi-Fi stays stable on its own.
Usually, adjusting just a few settings is enough to solve the frequent switching problem and put you back in control of your own network.