To connect GT-I9505 phone you have to perform the following steps:
1. Disconnect USB cable from phone.
2. Go to Menu->Settings->Applications->Development.
3. Turn on "USB Debugging" option.
4. When message is appear press "Yes".
5. Go to dial window.
6. Enter "*#7284#" number.
7. Set "UART" radio button to "MODEM" value.
8. Go to dial window.
9. Enter "*#9090#" number.
10. Select "[4] DM over UART(*)".
11. Restart phone.
12. Press "Read Info" in software.
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Platform: Samsung Android
Selected port: COM4
Selected model: GT-I9505
Mode: Normal
Phone model:
Warning: Selected model (GT-I9505) differs from the detected one ()!
Firmware compiled date: :00ACEFWTAZ
Firmware compiled time: * ÿd
Firmware released date: :45Mar 28 2
Firmware released time: 01309:00
Phone IMEI: 355172-05-030435-9
SW Version: M9615A-CEFWTAZM-4.0.17062
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Platform: Samsung Android
Selected port: COM4
Selected model: GT-I9505
Mode: Normal
Phone model: ACEFWTAZ
Warning: Selected model (GT-I9505) differs from the detected one (ACEFWTAZ)!