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Galaxy S7 converts SMS to MMS when file size reaches 1K, SD card unmounts randomly, other issues

Hello guys! Welcome to another #GalaxyS7 post we’ve prepared for you even during the holidays. We bring you 6 Galaxy S7 issues we’ve collected before and during the Christmas holidays. We hope that this material will help our ever-growing Android community. Should you not find your own solution in this material, don’t forget to visit our main Galaxy S7 troubleshooting page.

Below are the issues we bring for you today:

  1. Galaxy S7 converts SMS to MMS when file size reaches 1K
  2. Galaxy S7 won’t turn on after accidental drop
  3. Galaxy S7 from US has call problems in India
  4. Emails keeps getting marked as read when it comes to Galaxy S7
  5. Galaxy S7 receives notifications but the screen remains black
  6. Galaxy S7 SD card unmounts randomly

If you are looking for solutions to your own #Android issue, you can contact us by using the link provided at the bottom of this page, or you can install our free app from Google Play Store.

When describing your issue, please be as detailed as possible so we can easily pinpoint a relevant solution. If you can, kindly include the exact error messages you are getting to give us an idea where to start. If you have already tried some troubleshooting steps before emailing us, make sure to mention them so we can skip them in our answers.


Problem #1: Galaxy S7 converts SMS to MMS when file size reaches 1K

It’s the issue you actually have a solution — I can’t switch off automatic conversion of SMS to MMS once its size reaches 1K. I’ve read through your wonderful site – I’ve only just found it, took a good number of solid tips, but this issue unfortunately remains unsolved. The thing is, there is just no option to switch this blasted thing off on my S7 Edge. I went were you said it should be and it wasn’t there. Now, my phone us pure vanilla no root attempts, bought at Samsung store, warranty intact, updated to everything latest only from official sources, in other words to me it always looked as if it was a feature, not a bug, even if a bit on the stupid side. But if you guys could help me figure it out, you are going to make my life a lot easier… ) So there ) Thanks in advance ) — Maxim

Solution: Hi Maxim. Assuming you’re using the stock Messages app, the usual way to prevent SMS from converting to MMS is by changing Input mode to whatever that works (usually GSM alphabet). Here’s how it’s done:

  • Open Messages app.
  • Tap MORE.
  • Tap Settings.
  • Tap More settings.
  • Tap Text messages.
  • Tap Input mode.
  • Select GSM alphabet.

If your SMS continues to convert to MMS, talk to your wireless carrier as this may be a limitation they set.

Problem #2: Galaxy S7 won’t turn on after accidental drop

Hello. I was wondering if you could help me. I have a Samsung Galaxy S7. I had no problems with my phone before this. Today I left my phone on the sofa and when my brother sat there, the phone fell on the floor (not a big height, also it had the case so it was protected). When I picked the phone it was turned off but it didn’t scare me because I had seen other phones turning off after being dropped. When I tried to turn it on the phone wouldn’t respond (anything, just black screen), eventhough it had around 80 percent of battery when that happened.

I tried plugging it in. My concern was when instead of showing the battery on screen (you know the green battery with the percentage of charge) the phone would only show the plugged battery on screen (for barely a second) and then turn off. this happens again and again when plugged and it is still impossible to turn on. So I wonder what the problem might be. I tried  a few methods from the web but the phone is completely dead. — William

Solution: Hi William. Accidental drops can sometimes lead to all sorts of issues regardless of height a device is dropped from. If this issue happened right after your brother dropped the phone, it’s safe to assume that hardware malfunction is to blame. You must have the phone checked by Samsung or by qualified third party technician so the hardware can be physically checked. Before you do that though, try to see if you can boot the phone to other modes. Here’s how:

Boot in Recovery mode:

  • Charge the phone for at least 30 minutes.
  • Press and then hold the Home and Volume UP keys, then press and hold the Power key.
  • When the Samsung Galaxy S7 shows on the screen, release the Power key but continue holding the Home and Volume Up keys.
  • When the Android logo shows, you may release both keys and leave the phone be for about 30 to 60 seconds.
  • Using the Volume Down key, navigate through the options and highlight ‘wipe cache partition.’
  • You can either wipe the cache partition or do a factory reset when in this mode.

Boot in Download Mode:

  • Charge the phone for at least 30 minutes.
  • Press and then hold the Home and Volume DOWN keys, then press and hold the Power key.
  • When the Samsung Galaxy S7 shows on the screen, release the Power key but continue holding the Home and Volume DOWN keys.
  • Wait until the Download screen appears.
  • If you can boot the phone in download mode but not in other modes, that means that your only way out may be to flash a stock or custom firmware.
  • Use Google to look for a guide on how to do it.

Boot in safe mode:

  • Charge the phone for at least 30 minutes.
  • Press and hold the Power button.
  • Once the ‘Samsung Galaxy S7’ logo appears, release the Power key and immediately press and hold the Volume Down button.
  • Continue holding the button until the phone finishes rebooting.
  • Once you see the text “Safe mode” at the bottom left corner of the screen, release the Volume Down button.
  • The only difference of safe mode from normal mode is that the former prevents third party apps from running. If you can boot the phone in safe mode but not in normal mode, uninstall all apps until the issue (that prevents you from booting normally) is eliminated.

Problem #3: Galaxy S7 from US has call problems in India

Phone Bought in US (2 phones) and came to India. That’s when the issues started. I have Google voice installed on my HTC One m7, and when I dial a number in India from US, Google voice would take over and call. When I brought this phone to India and inserted Indian carrier SIM, I expected to make normal local calls. But for some reason most of the times it would take this as an international call but sometimes not. It would not even complete the call saying call cannot be completed and still deduct international calling charges for 1min. Then the same thing on the other phone, Galaxy S7 Edge. Sometimes I can make calls, but don’t know for what reason sometimes it would think this as international call, say call cannot be completed and also deduct the international calling charges. There is no Google voice installed on this phone. I had been using both these phones in US for some time with Google accounts signed in every where. I have a 3rd fresh piece of Galaxy S7 Edge which I brought as gift. There was no Google account signed in anywhere (Play Store) and this phone had no issue. I tried changing address in the Google wallet to an Indian address but didn’t work. — Hellomits

Solution: Hi Hellomits. An issue like this is usually beyond any third party technicians like us to fix. The fact that there’s virtually nothing helpful piece of information you’ve provided that we can start our troubleshooting with does not help at all. Kindly contact your carrier in India to see if there’s something that they can do. Keep in mind that not all phones brought from the US works with all carriers from other countries. For example, using a US CDMA phone in a GSM network may result to some services working erratically. Talk to your carrier in India and see if there are some incompatibility issues causing your problem right now.

Problem #4: Emails keeps getting marked as read when it comes to Galaxy S7

I am having issues with my Galaxy S7 email app. When I set up my work email in the app, I have to choose Add Other Account, then i am able to log in directly to my work email without additional manual set up. Once this happens, the account will always mark any new email coming in as “read” any time the email refreshes, which seems to be continually, even though i have sync set to every 15 minutes. The issue is that it is marking any email coming in as “read” without me even clicking/tapping on it. I sent myself several test emails and with the phone lying on my desk in front of me, I’d watch as the email came in, then the blue refresh bar at the top of the screen appears, and the new email is automatically marked as read, even though i haven’t touched anything. I don’t see any settings to enable/disable auto-mark as read. Do you know how i can change this or why this is happening? — Amanda

Solution: Hi Amanda. This may be a bug in your email app. Try wiping its cache and data first to see the difference. Here’s how:

  • Open the Settings menu either through your notification shade (drop-down) or through the Settings app in your app drawer.
  • Navigate down to “Apps”. This may be renamed to something like Applications or Application Manager in OEM skinned versions of Android 6.0.
  • Once in there, click on an application.
  • You’ll now see a list of stuff that gives you information about the app, including Storage, Permissions, Memory Use, and more. These are all clickable items. You’ll want to click on Storage.
  • You should now clearly see the Clear Data and Clear Cache buttons for the application.

If wiping the app’s cache won’t change anything, consider setting up your email to another device so you’ll know if the problem is due to a bug in your S7 or not.

Keep in mind that an issue like this can also be caused by some advanced settings in your email service provider’s system. Make sure that you let your email service provider know about the issue.

Problem #5: Galaxy S7 receives notifications but the screen remains black

Hello, for some crazy reason my phone started acting up. One minute I’m on my phone, hung up the screen started blinking. I cut it off restarted the phone it started blinking again then my phone just went black. I’m still able to hear my notifications but I just can’t see nothing. I tried cutting the phone off again but this time it’s not letting me do nothing. If I press the home key nothing comes up, if I press the on/off key it will blink then it gets black again. I have a Galaxy S7 Edge. — Monsanaj41

Solution: Hi Monsanaj41. First of all, we want to make it clear that if your phone was accidentally dropped or got wet before contacting us, there’s no point looking for software solutions. No amount of software solutions can help you fix it.

Secondly, your problem description is too short and does not give us any useful information where to start our troubleshooting. We don’t know the full history of your device, we don’t know what lead to the issue, and we can’t physically check it. That said, there’s very little to nothing that we can do to help.  If your phone still receives notifications or still rings when you call it, the problem may lie on the screen only. If you never dropped the phone or exposed it to water, some unknown hardware malfunction may have caused it to fail. Try to see if a factory reset will change anything. Here’s how to do it:

  • Turn off your Samsung Galaxy S7.
  • Press and then hold the Home and Volume UP keys, then press and hold the Power key.
  • When the Samsung Galaxy S7 shows on the screen, release the Power key but continue holding the Home and Volume Up keys.
  • When the Android logo shows, you may release both keys and leave the phone be for about 30 to 60 seconds.
  • Using the Volume Down key, navigate through the options and highlight ‘wipe data / factory reset.’
  • Once highlighted, you may press the Power key to select it.
  • Now highlight the option ‘Yes — delete all user data’ using the Volume Down key and press the Power button to select it.
  • Wait until your phone is finished doing the Master Reset. Once completed, highlight ‘Reboot system now’ and press the Power key.
  • The phone will now reboot longer than usual.

Problem #6: Galaxy S7 SD card unmounts randomly

Hi! So I’m having this issue with my SD CARD randomly unmounting itself and I haven’t really seen anything that matches my issue. I’ve seen similar ones but not the exact same. I notice it only happens with the Gallery/Camera apps. Some times I’ll be thumbing through my camera album and it’ll just disappear. That one album only. Or the Camera will suddenly “detect” an SD CARD and tell me all images will be saved to the card. It’s done that about five times now. So I don’t know if it’s my phone or SD because everything else is fine. Ideas? Suggestions? — Polly

Solution: Hi Polly. There may be a bug that causes this erratic behavior. To see if it’s a bug on either app (Gallery or Camera), make sure that you wipe the cache and data of each one. If that won’t change anything, try wiping the cache partition. This will help ensure that the system is using an updated cache when interacting with an app. To do that, follow these steps:

  • Turn off your Samsung Galaxy S7.
  • Press and then hold the Home and Volume UP keys, then press and hold the Power key.
  • When the Samsung Galaxy S7 shows on the screen, release the Power key but continue holding the Home and Volume Up keys.
  • When the Android logo shows, you may release both keys and leave the phone be for about 30 to 60 seconds.
  • Using the Volume Down key, navigate through the options and highlight ‘wipe cache partition.’
  • Once highlighted, you may press the Power key to select it.
  • Now highlight the option ‘Yes’ using the Volume Down key and press the Power button to select it.
  • Wait until your phone is finished doing the Master Reset. Once completed, highlight ‘Reboot system now’ and press the Power key.
  • The phone will now reboot longer than usual.

To see if this issue is caused by a third party app, you can also boot your phone to safe mode. Here’s how:

  • Turn your Galaxy S7 off.
  • Press and hold the Power button.
  • Once the ‘Samsung Galaxy S7’ logo appears, release the Power key and immediately press and hold the Volume Down button.
  • Continue holding the button until the phone finishes rebooting.
  • Once you see the text “Safe mode” at the bottom left corner of the screen, release the Volume Down button.

The ultimate troubleshooting step that you can try is of course factory reset. If you haven’t tried that before, make sure that you do it this time. Finally, if all these software troubleshooting steps won’t work, the problem may be caused by a faulty SIM/SD card tray.  Contact Samsung and ask for assistance regarding the issue.

 


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