Why is web surfing on my Galaxy S2 slow?

Vipul Jain June 8, 2013
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I have a 1Mbps hard line connection with a Modem+Router model.
Now I get download speeds for upto 120-130kbps on my PC (connected via LAN), my laptop (via Wifi) and my phone, the Galaxy S2 I9100 (via Wifi again).
I get smooth surfing speeds with normal loading pages on my PC & Lappy.

The problem is that surfing speed on my phone is extremely slow. Be it the Facebook app, Tapatalk app, normal pages in the Stock Browser, Opera Mini, anything.
Everything is slow as a snail.
No background downloads, cloud backups or any network hogging resources run in the background.
The phone is stock, unrooted, untouched, so no ROM troubles.

Does anyone have an idea as to what the problem might be?
I’m highly avoiding a format since that will be a hell lot of work.
Also, if it might help, 3G/HSPDA work excellent.

  1. Vipul Jain
    June 10, 2013 at 5:29 am

    Thanks guys for all the recommendations. So,

    1) QoS settings are deactivated already.
    2) Tried WIFI Analyser. No overlaps on my signal. Though the signal is a bit weak, but I'm using my laptop in the same room and it works great! (Anyhow tried sitting just next to the router, still didn't help)
    3) The DNS are predefined here by my provider and changing them is not recommended.

    But somehow, (i really don't understand the logic), I changed security from WPA to WEP and the surfing speeds were back to normal for a few seconds, then back to the same problematic state. (Though a bit better than before)

    • ha14
      June 14, 2013 at 6:45 pm

      have you tried hard reset (return to factory settings, first do backup files since they will be deleted) to see if problems get solved?

    • Vipul Jain
      June 15, 2013 at 3:22 am

      That's the only thing I haven't tried yet. Since I'm not rooted it'll be a hell lot of work backing up apps without titanium backup :/
      But I guess I'll do that sooner or later if this persists :(

  2. Degenerated S
    June 9, 2013 at 6:07 am

    maybe your Internet Provider's DNS servers are very slow ...try other DNS like google DNS ( , or open DNS

  3. DalSan M
    June 8, 2013 at 4:18 pm

    I would also check the router settings to see if there are any settings for Quality of Service (QoS). If there are, turn the QoS feature off and see if it helps.

  4. ha14
    June 8, 2013 at 9:28 am

    check your wifi if it is on g or n while connected to your Galaxy S2 I9100

    which encryption you use WPA?

    change channel on the router

    Samsung Galaxy S2 – Slow WiFi – Slow Wireless (Wi-Fi)

  5. Leland Whitlock
    June 8, 2013 at 7:02 am

    Sounds to me like you have an issue with your tcp/ip settings on the phone or a very weak signal is reaching the phone. You could use Network Info II as seen at https://play.google.com/store/apps/details?id=aws.apps.networkInfoIi to check your current settings. You might also tweak the router settings but not knowing your setup it is hard to give specific advice. On Windows there used to be an app to optimize your tcp settings to get the most throughput possible. I would expect Android phones to be mostly automatic. I have used apps like SD Maid to cleanup memory which can help in some instances. The fact that your sisters S3 did the same leads me to think it might be a router issue. Can you program an alternate firmware to your router or update the firmware? That might solve your issues. Good luck.

    • Leland Whitlock
      June 8, 2013 at 7:26 pm

      I have some additional thoughts. Try WiFi Analyzer as seen at https://play.google.com/store/apps/details?id=com.farproc.wifi.analyzer to see if perhaps your neighbors have a router that is conflicting with yours. It is very simple just run it and it shows a graph of all nearby access points showing signal and overlap. If there is to much overlap it can cause problems and major slowdowns. Then login to the router and change the channel used for wifi in order to get the least interference. If all goes well your speed will improve.

      One last app that might be useful in keeping an eye on this is WiFi Manager as seen at https://play.google.com/store/apps/details?id=org.kman.WifiManager It too shows signal strength and channel used. However it is geared more for hooking up to access points but it too can be a very useful troubleshooting tool. Hopefully with this additional information you can solve your issue.

  6. Rahul Yadav
    June 8, 2013 at 5:47 am

    Try optimizing your phone with Iobit's Advanced Mobile Care

    Iobit's products come as life saver to me in every situation. I hope it helps you as well
    Good Luck :)

    • Vipul Jain
      June 8, 2013 at 6:28 am

      Thanks I'll try it, though I don't think it's a phone problem.
      That's because I even tried my sister's Galaxy S3 (Stock, unrooted), and same stuff.
      Great download speeds but pathetic surfing speeds! :/

    • Rahul Yadav
      June 8, 2013 at 6:37 am

      Try on a different browser n see if it makes any diference

    • Vipul Jain
      June 8, 2013 at 6:42 am

      Tried Dolphin yesterday. Same surfing speeds.
      And it's not just browser, it's every app! (Bookmyshow, FB, Tapatalk, everything surfs slow, but downloads fast) :|

    • Rahul Yadav
      June 8, 2013 at 7:02 am

      Try changing your wi-fi security to WEP if currently set to WPA.

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