Formal:
* లేవగానే నాకు ఫోన్ చేయండి. (lēvagāne nāku phōn cēyaṇḍi) - This is the most direct and formal way to say it.
* మీరు లేవగానే నాకు ఫోన్ చేయండి. (mīru lēvagāne nāku phōn cēyaṇḍi) - This is a slightly more polite version, adding "mīru" (you) before "lēvagāne".
Informal:
* లేస్తే నాకు కాల్ చేయి. (lēste nāku kāl cēyi) - This is a casual and friendly way to say it, using "lēste" (if you wake up) and "cēyi" (do it) instead of "cēyaṇḍi".
* లేచిన తర్వాత కాల్ చేయరా. (lēcina tarvāta kāl cēyarā) - This is also informal and means "call me after you wake up".
You can also choose a phrase that suits your relationship with the person you are talking to.
For example:
* నీకు లేస్తే నాకు కాల్ చేయి. (nīku lēste nāku kāl cēyi) - This is a more informal and personal way to say it, using "nīku" (to you) instead of "mīru" (you).
Remember to use the appropriate pronoun and verb conjugation based on the person you are talking to.