Sainsbury’s App Not Working – Here’s How To Fix It

There’s nothing more frustrating than not being able to order your weekly groceries because of your Sainsbury’s App not working.

With more and more people shifting to ordering their groceries online due to the pandemic, supermarkets were forced to step up their tech game and deliver top-class apps for people to easily order their weekly groceries.

Sainsbury’s has been going strong for over 150 years so you wouldn’t expect to have too many problems with the Sainsbury’s app not working (like you may have with other newer supermarkets, as some people report issues with Ocado too).

However, it is a supermarket chain and not a world-class tech company, so in the past, it has been known to have some issues with the app or website. If you’ve been having issues with Sainsbury’s app, then keep reading to hear some of our tried and tested troubleshooting ideas.  

Sainsbury’s App not working – Here’s how to fix it

Check there are no issues with the Sainsbury’s server

Often issues with the Sainsbury’s app are caused by issues with the Sainsbury’s server itself. If there is a wider issue, they’ll usually post about this on their website or social media platforms, so we recommend that you check this first and wait to use the app until they’ve announced that the server issue is resolved.

But if you’ve checked their Twitter or Facebook page and they haven’t mentioned an issue at their end, it’s likely to be an issue with your phone, app or internet connection. 


Keep reading for some common problems that people have if their Sainsbury’s app is still not working. 

Check for updates 

Making sure that you’re running on the latest version of the app is the first thing to check when you’re having problems with the Sainsbury’s app not working. When an app is running on an out-of-date version, you’re much more likely to face issues with it not loading, running slowly or crashing. 

If you have an iPhone, check for updates by visiting the App Store > tap your profile icon at the top of the screen and scroll to see apps that require an update. Simply tap ‘Update’ on the Sainsbury’s app if it’s showing there.  

If you’re using an Android, open the Google Play Store app > tap the profile icon and the top right > tap Manage Apps & Devices, apps with an update available are labelled ‘Update Available’.

If you’re using an iPhone, we recommend that you allow automatic downloads to ensure that all of your apps are always up-to-date. You can do this by going to your Settings > App Store and tick ‘App Updates’ to on. 


Next, it’s also a good idea to make that your phone itself is running on the latest update, as this can also cause apps to have problems like not loading or crashing. You can check this by going to your phone’s Settings. 

Like the app updates, you can also enable iOS updates to go through automatically. You can check this is enabled by going to Settings > General > Software Update and check that Automatic Update shows as ‘On’ as shown below. 


Check that you’re connected to WiFi or mobile data

The next thing to check is that you’re connected to WiFi or mobile data. Most apps don’t work offline, so a common reason that you won’t be able to use them is that you’re not connected to the internet. 

Sainsbury’s will show you a message like the below if you’re not connected to the internet. 


Other common mistakes people make are turning off their mobile data or putting their phone in airplane mode. To make sure that hasn’t happened go to Settings > Mobile Data and make sure that this is ticked as on. 

To check the WiFi on an iPhone, swipe up and make sure the WiFi is turned on (it will be highlighted blue), alternatively, go to your phone’s Settings > WiFi, and make sure this is turned on. Then check for any WiFi you can connect to. You can follow the same steps for Android but swipe down instead of up.

Finally, check that you haven’t put your phone in airplane mode by swiping up and checking the airplane symbol isn’t highlighted.

Delete and re-install the Sainsbury’s app

If everything appears to be okay with the severs and you’re all up-to-date, the next thing you should try is uninstalling the Sainsbury’s app, then re-install it. Sometimes apps just need a complete refresh.

To delete the app, tap and hold down on the app until the below drop-down appears. Then hit delete. For Android, tap and hold down the app until you feel a vibration, then drag the app to where it says ‘Uninstall’. 


Re-install by searching for it on the App Store or Google Play Store.

Although, make sure that you remember your login details before doing this as you’ll need to log back into your account so you don’t lose any data.


To round up, there aren’t often problems with the Sainsbury’s app with it being such a longstanding and trusted store, but if you are facing issues, there’s usually an easy fix and it’s likely to be one of the issues that we’ve covered in this article. 

Hopefully, this helped you with your issues so that you can get back to ordering your favourite groceries on the app.

Apps UK
International House
12 Constance Street
London, E16 2DQ