Does keeping your phone plugged in ruin the battery?

Related questions

1. Should lithium ion batteries be fully discharged before charging?
2. Do lithium ion batteries degrade if not used?
3. Is it OK to leave a tablet plugged in all the time?
4. Are lithium batteries better than alkaline?
5. Can you use a normal battery charger on a lithium battery?
6. Is it OK to charge phone when battery is half full?
7. How long do cr2032 lithium batteries last?
8. Do lithium ion batteries need to be fully charged before first use?
9. Is it bad to let lithium ion batteries die?
10. Should I let my new phone die before charging it?

Tags

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17. #phone