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Editorial Team
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Asked: 2026-05-16T03:40:56+00:00

Just back from a very nice vacation in Iceland, and await the data roaming

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Just back from a very nice vacation in Iceland, and await the data roaming bill from my phone company. I hope for the best having limited my traffic as much as possible, but I want to know in advance. I used the very nice app NetCounter but it didn’t measure roaming data traffic at all.

So I want to build my own app measuring just roaming data traffic. I have a few booleans to start with ( NetworkInfo.IsRoaming() & TelephonyManager.isNetworkRoaming() ), but I’m not sure how to measure the traffic if true.

So the question is: How do I measure data traffic while roaming? (Something like API level 8 TrafficStats functionality is what I’m after, but for API level 3). The used SmartPhone is Samsung Galaxy i7500 (Android 1.6)

Thanx for your time!

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1 Answer

  1. Editorial Team

    Method 1. Parse “/proc/net/dev”.

    In my phone it looks like:

    Inter-|   Receive                                                |  Transmit
 face |bytes    packets errs drop fifo frame compressed multicast|bytes    packets errs drop fifo colls carrier compressed
    lo:     712       8    0    0    0     0          0         0      712       8    0    0    0     0       0          0
dummy0:       0       0    0    0    0     0          0         0        0       0    0    0    0     0       0          0
rmnet0:       0       0    0    0    0     0          0         0        0       0    0    0    0     0       0          0
rmnet1:       0       0    0    0    0     0          0         0        0       0    0    0    0     0       0          0
rmnet2:       0       0    0    0    0     0          0         0        0       0    0    0    0     0       0          0
 wlan0:  146112     423   32    0    0     0          0         0    42460     409    0    0    0     0       0          0

    In my phone the “rmnet0” row is the one that holds the stats for mobile line internet. I hope its format does not vary among kernel versions.

    Method 2: Parse “/sys/class/net”.

    I guess this is the recommended method.
    As shown here: http://www.jaqpot.net/svn/android/netcounter/trunk/src/net/jaqpot/netcounter/service/SysClassNet.java

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