Mh, I just checked my GoG page, and it should indeed by the standard CD-ROM version. Onle WC4 is the DVD version, I think.
Launch problems in any game might be related to storage access restrictions implemented by Google with the Android 12/13 updates, so it might be worth running the initial DOSBox setup again.
Before you do so, and start moving/copying game files all over your phone, you might want to check your mountings, though. I have my game stored on an external sd card, and it’s running fine.
The game itself as well as the DATA.DAT (the CD-ROM image file from GoG) is in a subfolder called “/Games/PC” on my external sd, which is labelled “0000-0000”. For reference, these are the contents of my expert settings section:
[dosbox]
machine=svga_s3
memsize=32
vmemsize=4
[render]
frameskip=0
[cpu]
core=dynamic
cputype=auto
cycles=max 105%
[mixer]
blocksize=1024
prebuffer=5
rate=48000
[midi]
mpu401=intelligent
mididevice=synth
synth.sample-rate=48000
synth.gain=2
midiconfig=/storage/emulated/0/MagicBox/MidiROM/SGM-V2.01.sf2
[speaker]
pcspeaker=false
pcrate=11025
tandy=off
disney=false
[sblaster]
sbtype=sb16
sbmixer=false
oplmode=auto
oplemu=fast
oplrate=22050
[joystick]
joysticktype=none
[dos]
xms=true
ems=false
umb=true
keyboardlayout=auto
[autoexec]
@Echo Off
mount c: /storage/0000-0000/Games/PC
imgmount d /storage/0000-0000/Games/PC/WC3/DATA.DAT -t iso
d:
wc3