Some of the queries below are also answered by this video:

iPhone x apps not downloading
Apps not downloading on iPhone x
Apps not downloading on iPhone 8
App store not downloading apps on iOS 11
iOS 11 not downloading apps
iPhone 8 not downloading apps
why is my iPhone not downloading apps
why are apps not downloading on my iPhone
app store not working
new iPhone not downloading apps

If you can not download apps in your iPhone then let us see how to fix this issue. The first thing what we will do is we will start with the basic. So, you have to make sure that your WiFi connection is working fine and it is strong enough to download the apps in your iPhone. You can open YouTube and play some videos or you can try to download apps in another phone. If it is working or if you can download the apps in another phone then let us start with the second step.
1. So, now second step what you can do is you can go ahead and go to "Settings". 2. Then you can go to this Apple id.
3. Sing out from the apple id.
4. Sign out.
5. Now again sign into your iPhone with your apple id.
6. If you have another one you can use the other one or else uset he same one. Password. iTunes.
7. Select "Merge".
8. Now once you sign into the iTunes then what you do is try to open App store and download the apps again.
9. If it doesn't work then the other thing what we will do is we will go to "Settings".
10. We will go to "General".
11. We will go to "Restrictions".
12. If you have restriction enabled, just input the restriction code.
13. Make sure this "in app purchase", it is enabled.
14. Also under "Allowed contents", go to "Apps" here. Make sure that this Allow apps is, All apps are selected. If It it is like this, select "Allow all apps". Now once you select this one, try to download the apps again.
15. And the last thing what we will do is we will reset the network settings.
16. Go to "Settings".
17. Go to "General".
18.Go to "Reset" and select "Reset Network settings" and select "Reset Network settings".
19. So, when you do this the internet settings for your iPhone will be reset and once the iPhone is again restarted try to download the app from the app store again. Hope this will fix the issue.

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