How to Read Dbm on Iphone X
The point bars in your iPhone's status bar are great visual indicators for knowing how good your cellular reception is, but they're not very accurate. Instead of showing the actual corporeality of signal y'all're receiving, they just give you a full general range, and you'll have no idea if three out of four bars is really a good connection or not. Just there is a trick to see the existent numbers.
Believe information technology or not, but this trick has really been around for a long time. In iOS 10 and older, you lot could unlock a hidden network strength meter in your status bar. Doing so would actually visually change the signal bars in your status bar to decibel-milliwatts (dBm), the accented unit used to measure your reception from a jail cell tower. You tin see in the images below what I mean.
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Somewhen, all practiced things must end, and iOS 11 broke this trick, so at that place'southward no fashion for yous to change to dBm anymore in your condition bar if you want more exact reception data. However, in that location is a way in iOS 11, 12, xiii, fourteen, and 15 for you to see your signal strength in dBm still — y'all just won't get the convenience of it sticking around in your status bar.
Requirements
Almost iPhone models running iOS 11, iOS 12, iOS 13, iOS xiv, and iOS fifteen will let you view your 4G LTE or 5G reception force to the nearest cell tower using Field Test mode. Nonetheless, some models with Qualcomm wireless modems have had issues in the past, then y'all're mileage may vary.
Step i: Apply the Field Examination Dialer Code
To meet your current bespeak strength in actual numbers, y'all'll need to enter Field Test mode on your iPhone. This can exist washed exactly similar earlier in iOS 10 and under, using the following code.
*3001#12345#*
So, open upwards your Phone app to the "Keypad" tab, type in that code above, then follow it upwards by striking the green call button. If you lot see the Field Test carte that looks similar the one on the left below, you don't accept an Intel chip, but if it looks similar the 1 on the right, you lot do have an Intel chip, and you can proceed.
On iPhones running iOS 14 and later, the Field Exam menu looks different but even so houses most of the same data, as you'll run into below.
Step 2: Notice Your Reception Numbers
From the primary Field Test menu, select "LTE," so "Serving Cell Meas" on the adjacent page. On this page, yous'll desire to look at the numbers next to rsrp0 and rsrp1. The onetime is the prison cell tower yous're currently connected to, while the latter is the closest backup tower. RSRP refers to "reference bespeak received power."
If you lot're running iOS 14 and later, you lot'll see a folio called "Dashboard." On iOS 14, you tin can coil downwards to notice the rsrp0 and rsrp1 numbers for LTE. You could also tap the list icon to open "All Metrics," then choose "Serving Cell Meas" under LTE. For iOS fifteen, make sure you lot're in the "All Metrics" tab, and look for rsrp in ane of its sections, for instance, "Rach Attempt" under LTE.
Step 3: Determine Your Real Reception
For our purposes here, you'll only want to pay attention to the rsrp0 or rsrp numbers, which will exist closest to the digits that would appear in your status bar in iOS ten and older. The number should be displayed as a negative number since that's how dBm signal forcefulness is measured. The closer the negative number is to 0, the better your reception is. The larger the negative number is, the worse your reception is. Then, compare your dBM to the ones in the list below.
- -90 or higher = Excellent
- -91 to -105 = Good
- -106 to -120 = Fair
- -121 to -124 = Poor
- -125 = No Betoken
So, in my case, my iPhone running iOS xi is reading -100, which falls into the "Skillful" category of reception. You tin also see that my signal bars are 4/4, which is likely because that quaternary bar includes everything from the "Good" category and higher. So, while the reception may exist good, information technology'southward not the best it could be, though yous will rarely feel "Excellent" reception unless you are standing adjacent to a cell tower, even if your iPhone says four/4 bars.
For my iPhone running iOS 14, the reading is between -102 and -112, which means "Expert" to "Fair." I don't really accept a SIM bill of fare in this device, but you'll yet be able to see signal strength for the closest towers.
This Is as Proficient every bit It Gets
For iPhones not running Intel cellular radio chips, you tin can still dig through the Field Test menu to get an thought of what your reception is similar, but none of information technology is very accurate. For case, some people say you can use "Measured RSRP" to calculate your actual reception, just it's completely inaccurate in my feel. The "Measured RSSI" number may also be noteworthy since it stands for "received betoken strength indicator," but again, in my experience, this is nowhere near accurate.
Perchance one day the Field Test tool volition be just as useful every bit it was on iOS 10 and under. Information technology looked like it was getting worse starting in iOS 11, but iOS 14 and iOS xv gave it a much-needed facelift. You can even bookmark your favorite data points in iOS xv for easy reference.
Whatever apps that could read this data before iOS eleven can't function anymore (at least, none that I've constitute), so if you were hoping for a quick mode to see your reception in dBm using a third-political party app, you'll be sorely disappointed.
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Source: https://ios.gadgethacks.com/how-to/see-your-iphones-actual-signal-strength-for-cellular-reception-0182733/
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