The single biggest step to concentrate better is to remove your phone from the room while studying, not just on silent, but out of sight. Most distraction comes from the phone, and willpower alone rarely beats the urge to check it. Physical distance works where self-control fails.
Create a fixed study spot. Studying in the same clean, well-lit place every day trains your brain to switch into focus mode the moment you sit there. Avoid studying on your bed, because it signals rest, not work.
Use the Pomodoro technique: study for 25 to 50 minutes, then take a 5 minute break. Knowing a break is coming makes it easier to resist distractions during the focus block. Gradually increase the focus time as your stamina grows.
Set a clear task before you start. Study physics is vague; solve 10 problems from Chapter 3 is specific. A defined goal keeps your mind from wandering because you know exactly what you are doing.
Example: A student in Bengaluru who kept losing focus to Instagram started leaving the phone in another room and studying in 40 minute blocks. Within two weeks, the same syllabus that took all evening was done in half the time.
Tackle hard subjects when your energy is highest, usually morning for most people. Save lighter tasks for when you are tired.
One practical tip: Keep a distraction notepad beside you. When a random thought such as reply to that message pops up, write it down instead of acting on it. You deal with it after the session, and your focus stays unbroken.