diff --git a/temp/modemmanager/APKBUILD b/temp/modemmanager/APKBUILD
index 393990b9e..4e0fafa6f 100644
--- a/temp/modemmanager/APKBUILD
+++ b/temp/modemmanager/APKBUILD
@@ -3,7 +3,7 @@
 pkgname=modemmanager
 pkgver=9999
 _pkgver=1.14.6
-pkgrel=0
+pkgrel=1
 pkgdesc="ModemManager library"
 url="http://www.freedesktop.org/wiki/Software/ModemManager"
 arch="armhf armv7 aarch64"
@@ -25,7 +25,8 @@ source="https://www.freedesktop.org/software/ModemManager/ModemManager-$_pkgver.
 	$pkgname.rules
 	$pkgname.initd
 	rpmsg.patch
-	rpmsg-udev.rules"
+	rpmsg-udev.rules
+	utf16.patch"
 builddir="$srcdir"/ModemManager-$_pkgver
 
 # Workaround build freeze with QEMU user emulation
@@ -88,4 +89,5 @@ sha512sums="b55fe9048e76228aba6e4cd3117a9e48cbb50a1a535f675a2356011d932035815616
 8d736f477649e42c05b34ac55391353c7f0c17138d039e049b16b07624d86fd9968ef1aa14672a63decf8b2c0ae984a34a0770322198b326775efba58f566685  modemmanager.rules
 e2769401c52c3fff0b8057c13c6f7f2e5656c2963239ecbd647a01e66a344f6852cf2ba065358248315945bdf6ebbc4976903565b12ace2d15df6586dcc1de5b  modemmanager.initd
 64270c00630f3dd73b5e06547e441f5cf8d75b96032da423c4132af2fc84b2c35042800e105c66bae354d61c66b716cc602421ac0ff82f7b4a8f0ce798855e24  rpmsg.patch
-0928a7b658d0eeb37daf40930ea930b266151df743c2c7b1d863bce9447fedb904924a5e673732d5bc765dc2ec6d8f4a2b47bc946575e8f18712c0f7ee81fb73  rpmsg-udev.rules"
+0928a7b658d0eeb37daf40930ea930b266151df743c2c7b1d863bce9447fedb904924a5e673732d5bc765dc2ec6d8f4a2b47bc946575e8f18712c0f7ee81fb73  rpmsg-udev.rules
+7a88ea53600377e4a6bd652fa90036b7d8284dbaeb02c39f79501fc6f1368519291786df2fd8112b9b606da759d6e758be30fe558bab3a85a70e07e366362530  utf16.patch"
diff --git a/temp/modemmanager/utf16.patch b/temp/modemmanager/utf16.patch
new file mode 100644
index 000000000..2c1eccce2
--- /dev/null
+++ b/temp/modemmanager/utf16.patch
@@ -0,0 +1,19 @@
+temp/modemmanager: Fix sending SMS with UTF-16 characters
+
+Upstream: no
+
+Patch recommended by Aleksander Morgado in upstream issue, until a proper
+fix is developed:
+https://gitlab.freedesktop.org/mobile-broadband/ModemManager/-/issues/274#note_671679
+
+diff --git a/src/mm-charsets.c b/src/mm-charsets.c
+index 19d1874c4..67b2103cd 100644
+--- a/src/mm-charsets.c
++++ b/src/mm-charsets.c
+@@ -43,7 +43,7 @@ static const CharsetEntry charset_map[] = {
+     { "PCCP437", "CP437",  "CP437",     "CP437//TRANSLIT",     MM_MODEM_CHARSET_PCCP437 },
+     { "PCDN",    "CP850",  "CP850",     "CP850//TRANSLIT",     MM_MODEM_CHARSET_PCDN    },
+     { "HEX",     NULL,     NULL,        NULL,                  MM_MODEM_CHARSET_HEX     },
+-    { "UTF-16",  "UTF16",  "UTF-16BE",  "UTF-16BE//TRANSLIT",  MM_MODEM_CHARSET_UTF16   },
++    { "UTF-16",  "UTF16",  "UTF-16BE",  "UTF-16BE",  MM_MODEM_CHARSET_UTF16   },
+ };