Get signal strength of WIFI and Mobile Data

Question

In my app I need to check the connection speed of both WiFi and Mobile Data and then compare it, then switch to which ever network has the highest speed.

So how can I get the speed or best signal strength of wifi and mobile data?
how can I switch one off and other on programatically.

Please help me out. A sample would be helpful.

Never done that before but maybe this can help you a bit http://mobisocial.stanford.edu/news/2011/03/control-3g-interface-with-your-own-application-on-andriod-phone/ . Rest of job should be done by checking NetworkManager + connection speed tests. Hope it helps — Pawel Cala, Aug 23 '13 at 09:35

score 33 · Accepted Answer · answered Aug 23 '13 at 10:03

33

Wifi:

WifiManager wifiManager = (WifiManager)context.getSystemService(Context.WIFI_SERVICE);
int linkSpeed = wifiManager.getConnectionInfo().getRssi();

In case of mobile it should work:

TelephonyManager telephonyManager =        (TelephonyManager)this.getSystemService(Context.TELEPHONY_SERVICE);
CellInfoGsm cellinfogsm = (CellInfoGsm)telephonyManager.getAllCellInfo().get(0);
CellSignalStrengthGsm cellSignalStrengthGsm = cellinfogsm.getCellSignalStrength();
cellSignalStrengthGsm.getDbm();

Then You should compare this signal levels and if WIFI signal is better keep it turn on, but if mobile is better disconnect wifi

answered Aug 23 '13 at 10:03

pepe-pa

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how to programatically switch of wifi?? – WISHY Aug 23 '13 at 10:26
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Add premission ACCESS_WIFI_STATE, CHANGE_WIFI_STATE Then you can use the following in your activity class: wifiManager.setWifiEnabled(false); – pepe-pa Aug 23 '13 at 10:55
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remeber that signal strength is a negative value – pepe-pa Aug 23 '13 at 10:59
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code for mobile signal strength checking is only applicable for and API level 17 and above. – Shailendra Sep 02 '13 at 10:31
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@pepe-pa How can we determine that the connection is too low ?(I want to stop download when connection is too low in signal) – Karthikeyan Ve Jul 08 '14 at 14:34
However, if we use getAllCellInfo(), we must checkout location-permission, otherwise, the application will crash on android 6 and above. – TeeTracker Jan 15 '18 at 15:52
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error cash `android.telephony.CellInfoLte cannot be cast to android.telephony.CellInfoGsm` when use 4G – vuhung3990 Sep 11 '18 at 10:47
Remember that the GPS must be ON in order to access the mobile signal strength. – Greelings Apr 19 '22 at 13:53

Get signal strength of WIFI and Mobile Data

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