Gresso Royal Black Diamonds - Frequency Bands and Network Compatibility
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The Gresso Royal Black Diamonds supports 3 GSM bands. See the tables below for details.
This device accepts the following SIM types to connect to mobile networks:
Run a cross-reference compatibility check of this device on a specific network and country using the following links:
Supported Frequency Bands (3)
GSM
| Name | Interface |
|---|---|
| 900 MHz (E-GSM) | GSM |
| 1800 MHz (DCS) | GSM |
| 1900 MHz (PCS) | GSM |
Supported GSM Protocols
| Name | Generation |
|---|---|
| CSD | 2G |
| GPRS | 2.5G |
