Some phones are really complicated to get a custom ROM onto, and in that case the risk is very high. Especially phones that are complicated to get a custom ROM onto and don’t have an easy way to get back to a normal OS.
I’ll give you 2 examples:
My Nexus 6p (RIP) was really easy to get a custom rom into. You could easily unlock the bootloader, very easily install twrp, and very easily get the new ROM installed. If you broke something, you could very easy restore to backup.
By contrast, my Huawei P10 lite was a nightmare to get a custom rom into. It was hard to unlock tho bootloader, I never got twrp installed, and eventually I broke the phone and couldn’t restore to backup.
There’s also some other stuff to keep in mind. A custom ROM is only as good as the community support around it. My Galaxy S1 SGH-i897 was amazing in that respect, it was released with cupcake and I had it running well into jellybean (as I recall, it’s been like 10 years). Everything worked, and every new rom made it an even better phone. By contrast, I’ve got some tablets that have important features missing, or you had to choose between a new version of android or having all the features of your device working.
It really depends on which phone you have.
Some phones are really complicated to get a custom ROM onto, and in that case the risk is very high. Especially phones that are complicated to get a custom ROM onto and don’t have an easy way to get back to a normal OS.
I’ll give you 2 examples:
My Nexus 6p (RIP) was really easy to get a custom rom into. You could easily unlock the bootloader, very easily install twrp, and very easily get the new ROM installed. If you broke something, you could very easy restore to backup.
By contrast, my Huawei P10 lite was a nightmare to get a custom rom into. It was hard to unlock tho bootloader, I never got twrp installed, and eventually I broke the phone and couldn’t restore to backup.
There’s also some other stuff to keep in mind. A custom ROM is only as good as the community support around it. My Galaxy S1 SGH-i897 was amazing in that respect, it was released with cupcake and I had it running well into jellybean (as I recall, it’s been like 10 years). Everything worked, and every new rom made it an even better phone. By contrast, I’ve got some tablets that have important features missing, or you had to choose between a new version of android or having all the features of your device working.