That's my RTT ping to 8.8.8.8 as I travelled south on CalTrain from SF last week, on T~mobile's network.
Now, this is on an old phone that is only capable of HSPA+. However, the actual performance on the whole is still nowhere near any theoretical limits, or even limits of HSPA+.
https://i.imgur.com/Dg4Jit5.png
That's my RTT ping to 8.8.8.8 as I travelled south on CalTrain from SF last week, on T~mobile's network.
Now, this is on an old phone that is only capable of HSPA+. However, the actual performance on the whole is still nowhere near any theoretical limits, or even limits of HSPA+.