πŸ“Ά

U+1F4F6 ANTENNA WITH BARS

U+1F4F6 was added to Unicode in version 6.0 (2010). It belongs to the block Miscellaneous Symbols and Pictographs in the Supplementary Multilingual Plane.

This character is a Other Symbol and is commonly used, that is, in no specific script. The character is also known as cellular reception.

The glyph is not a composition. It has a Neutral East Asian Width. In bidirectional context it acts as Other Neutral and is not mirrored. In text U+1F4F6 behaves as Ideographic regarding line breaks. It has type Other for sentence and Other for word breaks. The Grapheme Cluster Break is Any.

The Wikipedia has the following information about this codepoint:

A mobile phone signal (also known as reception and service) is the signal strength (measured in dBm) received by a mobile phone from a cellular network (on the downlink). Depending on various factors, such as proximity to a tower, any obstructions such as buildings or trees, etc., this signal strength will vary. Most mobile devices use a set of bars of increasing height to display the approximate strength of this received signal to the mobile phone user. Traditionally five bars are used; see five by five.

Generally, a strong mobile phone signal is more likely in an urban area, though these areas can also have some "dead zones" where no reception can be obtained. Cellular signals are designed to be resistant to multipath reception, which is most likely to be caused by the blocking of a direct signal path by large buildings such as high-rise towers. By contrast, many rural or sparsely inhabited areas lack any signal or have very weak fringe reception; many mobile phone providers are attempting to set up towers in those areas most likely to be occupied by users, such as along major highways. Even some national parks and other popular tourist destinations away from urban areas now have cell phone reception, though location of radio towers within these areas is normally prohibited or strictly regulated, and is often difficult to arrange.

In areas where signal reception would normally be strong, other factors can have an effect on reception, or may cause complete failure (see RF interference). From inside a building with thick walls or of mostly metal construction (or with dense rebar in concrete), signal attenuation may prevent a mobile phone from being used. Underground areas, such as tunnels and subway stations, will lack reception unless they are wired for cell signals. There may also be gaps where the service contours of the individual base stations (Cell towers) of the mobile provider (and/or its roaming partners) do not completely overlap.

In addition, the weather may affect the strength of a signal, due to the changes in radio propagation caused by clouds (particularly tall and dense thunderclouds which cause signal reflection), precipitation, and temperature inversions. This phenomenon, which is also common in other VHF radio bands including FM broadcasting, may also cause other anomalies, such as a person in San Diego "roaming" on a Mexican tower from just over the border in Tijuana, or someone in Detroit "roaming" on a Canadian tower located within sight across the Detroit River in Windsor, Ontario. These events may cause the user to be billed for "international" usage despite being in their own country, though mobile phone companies can program their billing systems to re-rate these as domestic usage when it occurs on a foreign cell site that is known to frequently cause such issues for their customers.

The volume of network traffic can also cause calls to be blocked or dropped due to a disaster or other mass call event which overloads the number of available radio channels in an area, or the number of telephone circuits connecting to and from the general public switched telephone network.

Representations

System Representation
NΒΊ 128246
UTF-8 F0 9F 93 B6
UTF-16 D8 3D DC F6
UTF-32 00 01 F4 F6
URL-Quoted %F0%9F%93%B6
HTML-Escape 📶
Wrong windows-1252 Mojibake Γ°ΒŸΒ“ΒΆ
alias cellular reception

Elsewhere

Complete Record

Property Value
Age (age) 6.0
Unicode Name (na) ANTENNA WITH BARS
Unicode 1 Name (na1) β€”
Block (blk) Misc_Pictographs
General Category (gc) Other Symbol
Script (sc) Common
Bidirectional Category (bc) Other Neutral
Combining Class (ccc) Not Reordered
Decomposition Type (dt) None
Decomposition Mapping (dm) πŸ“Ά
Lowercase (Lower) ✘
Simple Lowercase Mapping (slc) πŸ“Ά
Lowercase Mapping (lc) πŸ“Ά
Uppercase (Upper) ✘
Simple Uppercase Mapping (suc) πŸ“Ά
Uppercase Mapping (uc) πŸ“Ά
Simple Titlecase Mapping (stc) πŸ“Ά
Titlecase Mapping (tc) πŸ“Ά
Case Folding (cf) πŸ“Ά
ASCII Hex Digit (AHex) ✘
Alphabetic (Alpha) ✘
Bidi Control (Bidi_C) ✘
Bidi Mirrored (Bidi_M) ✘
Bidi Paired Bracket (bpb) πŸ“Ά
Bidi Paired Bracket Type (bpt) None
Cased (Cased) ✘
Composition Exclusion (CE) ✘
Case Ignorable (CI) ✘
Full Composition Exclusion (Comp_Ex) ✘
Changes When Casefolded (CWCF) ✘
Changes When Casemapped (CWCM) ✘
Changes When NFKC Casefolded (CWKCF) ✘
Changes When Lowercased (CWL) ✘
Changes When Titlecased (CWT) ✘
Changes When Uppercased (CWU) ✘
Dash (Dash) ✘
Deprecated (Dep) ✘
Default Ignorable Code Point (DI) ✘
Diacritic (Dia) ✘
East Asian Width (ea) Neutral
Extender (Ext) ✘
FC NFKC Closure (FC_NFKC) πŸ“Ά
Grapheme Cluster Break (GCB) Any
Grapheme Base (Gr_Base) βœ”
Grapheme Extend (Gr_Ext) ✘
Hex Digit (Hex) ✘
Hangul Syllable Type (hst) Not Applicable
Hyphen (Hyphen) ✘
ID Continue (IDC) ✘
Ideographic (Ideo) ✘
ID Start (IDS) ✘
IDS Binary Operator (IDSB) ✘
IDS Trinary Operator and (IDST) ✘
InMC (InMC) β€”
Indic Positional Category (InPC) NA
Indic Syllabic Category (InSC) Other
ISO 10646 Comment (isc) β€”
Joining Group (jg) No_Joining_Group
Join Control (Join_C) ✘
Jamo Short Name (JSN) β€”
Joining Type (jt) Non Joining
Line Break (lb) Ideographic
Logical Order Exception (LOE) ✘
Math (Math) ✘
Noncharacter Code Point (NChar) ✘
NFC Quick Check (NFC_QC) Yes
NFD Quick Check (NFD_QC) Yes
NFKC Casefold (NFKC_CF) πŸ“Ά
NFKC Quick Check (NFKC_QC) Yes
NFKD Quick Check (NFKD_QC) Yes
Numeric Type (nt) None
Numeric Value (nv) NaN
Other Alphabetic (OAlpha) ✘
Other Default Ignorable Code Point (ODI) ✘
Other Grapheme Extend (OGr_Ext) ✘
Other ID Continue (OIDC) ✘
Other ID Start (OIDS) ✘
Other Lowercase (OLower) ✘
Other Math (OMath) ✘
Other Uppercase (OUpper) ✘
Pattern Syntax (Pat_Syn) ✘
Pattern White Space (Pat_WS) ✘
Quotation Mark (QMark) ✘
Radical (Radical) ✘
Sentence Break (SB) Other
Simple Case Folding (scf) πŸ“Ά
Script Extension (scx) Common
Soft Dotted (SD) ✘
STerm (STerm) ✘
Terminal Punctuation (Term) ✘
Unified Ideograph (UIdeo) ✘
Variation Selector (VS) ✘
Word Break (WB) Other
White Space (WSpace) ✘
XID Continue (XIDC) ✘
XID Start (XIDS) ✘
Expands On NFC (XO_NFC) ✘
Expands On NFD (XO_NFD) ✘
Expands On NFKC (XO_NFKC) ✘
Expands On NFKD (XO_NFKD) ✘