I have GSM A1428 bought from Miami Apple Store, using in Istanbul/TURKEY (in Europe) with some Turkish carrier.
Turkish carriers sell GSM A1429, i compared lots of GSM A1429 iPhone 5's which bought from Turkey and another European countries like UK and Germany.
GSM A1429 gets lot better 3G data speed than my GSM A1428
(its like 17mbps with GSM A1429, 7-8mbps with my GSM A1428 in same conditions)
Both uses the same Carrier and the Nano Sim bought from the Carrier (not cutting the normal sim)
At the same place
No background applications etc
GSM model A1428*: UMTS/HSPA+/DC-HSDPA (850, 900, 1900, 2100 MHz); GSM/EDGE (850, 900, 1800, 1900 MHz); LTE (Bands 4 and 17)GSM model A1429*: UMTS/HSPA+/DC-HSDPA (850, 900, 1900, 2100 MHz); GSM/EDGE (850, 900, 1800, 1900 MHz); LTE (Bands 1, 3, 5)Everything is same about 3G, except LTE bands but thats not important i guess, because we dont have 4G in Turkey.
Carriers using Dual Carrier technology for better 3G speeds, it is up to 20-22 mbps in Istanbul.
Thank you for your responses.
Best Regards from Istanbul/Turkey
View the Correct Answer GSM A1428 Gets Slower 3G Speed than GSM A1429 in EUROPE in iPhone problem and errors Question , iPhone Wi-Fi, 3G and Bluetooth errors Answer