Have you tried different brands, and they all stop working after a while.
We can suggest a couple of possibilities why this is occurring:
1) You notice that your iPhone's battery doesn't charge as quickly as it used to when you use the same cable with the same power adapter. This happens because your iPhone is slowly "learning" that this particular cable doesn't provide as much power as the original, factory-provided one does.
2) Your iPhone's battery is slowly "learning" that it doesn't need to draw as much power from your charger. As you continue to use your phone with the same cable and adapter, it will "slowly" reduce the power it needs from that cable and adapter until eventually, it stops charging at all with that particular cable/adapter.
In either case, if you want the best possible performance from your iPhone's battery, use Apple's original wall plug and your original Apple-provided USB lightning cable as often as possible.
If you must use other brands of USB lightning cables, try to use them only when your phone's battery is at 80% or lower.
If it's the first case (your iPhone is "learning" that this particular cable doesn't provide enough power), then all you are required to do is stop using that cable and power adapter for a while until your iPhone's battery is completely discharged. Then, try charging your phone with the cable you were using when it stopped working and ONLY use that specific power adapter for this particular USB lightning cable.
If it's the second case (your iPhone "learning" that it can draw less power from a particular cable/adapter), then all you have to do is temporarily reverse the process: Stop using this specific cable and power adapter until your iPhone's battery is completely discharged. Then, charge your phone with that particular cable and ONLY use that specific power adapter for this particular USB lightning cable.
Why you should invest in the Anker Charger
We all have that buddy who is always running late and always needs a charger. Now you can be that friend's hero by giving them the Anker iPhone Charger Cable. This premium cable is made of high-quality nylon, making it resistant to wear and tear, and Apple MFi certified, meaning it's guaranteed to work with any Apple device. Plus, you get a lifetime warranty and friendly customer service, so you can be sure your giftee will be happy!
Anker's Apple MFi certified iPhone charger cable is tougher and longer than the average cable. It can resist plenty of wear and tear, plus it's long enough to let you move around without having to stay close to an outlet.
Anker's iPhone Charger Cable is made to last. With an enhanced construction that makes it 12X longer-lasting than the norm, this cable can withstand 90-degree bends over 12,000 times and bears up to 88 lbs of weight! So go ahead and put it to the test - your charging needs have never been so robust.